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April 10, 2026
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"There may be things that are completely unknowable to us, so we must be careful not to treat the limits of our knowledge as sure guides to the limit of what there is."
"Knowledge is in the end based on acknowledgement."
"Let no one be deluded that a knowledge of the path can substitute Jor putting one foot in front of the other."
"I think of the need for more wisdom in the world, to deal with the knowledge that we have. At one time we had wisdom, but little knowledge. Now we have a great deal of knowledge, but do we have enough wisdom to deal with that knowledge?"
"To gain knowledge, we must learn to ask the right questions; and to get answers, we must act, not wait for answers to occur to us."
"Knowledge is not eating, and we cannot expect to devour and possess what we mean. Knowledge is recognition of something absent; it is a salutation, not an embrace."
"Ideas are everywhere, but knowledge is rare."
"In Western society... [t]here are no more continents... little left to discover. I am, in part, an ant biologist... and I knew that much of the world of insects remains unknown. ...How ignorant are we? The question of what we know and do not know clung to me. ...In looking into the stories of biological discovery, I... began to find... a collection of scientists, often obsessive, usually brilliant, occasionally half-mad... Those individuals very often see the same things that other scientists see, but they pay more attention... and they focus on them to the point of exhaustion, and at the risk of the ridicule of their peers. ...[W]e are, before these discoveries, always more ignorant than we imagine ourselves to be. ...[W]e are repeatedly willing to imagine we have found most of what is left to discover. Before microbes were discovered, scientists were confident that insects were the smallest organisms. Before life was discovered at the bottom of the ocean, many scientists were confident that nothing lived deeper than three hundred fathoms. Once we made a tree of life that included four kingdoms (animals, plants, fungi, and s), we were confident that there would be no more major branches to reveal. ...We are again at a stage when we believe we have found most of what might be found, but we are wrong. ...[W]hole realms of life remain to be found. ...And even before a new realm or kind of life is found, we still have to explore the realms we have already discovered. Most species on Earth are not yet named. Most named species have not yet been studied. When we lived in small communities, hunting and gathering, we knew only the animals and plants around us, particularly those... useful or dangerous. Living on the thin green surface of our small planet in a universe full of stars, we are not so different today. The wild leaps up and more often than not we do not event know its name."
"The more we learn about the world, and the deeper our learning, the more conscious, specific, and articulate will be our knowledge of what we do not know, our knowledge of our ignorance. For this, indeed, is the main source of our ignorance — the fact that our knowledge can be only finite, while our ignorance must necessarily be infinite."
"He who knows not, and knows not that he knows not, is a fool. Shun him. He who knows not, and knows that he knows not, is simple. Teach him. He who knows, and knows not that he knows, is asleep. Wake him. He who knows, and knows that he knows, is wise. Follow him."
"I know that you believe you understand what you think I said, but I'm not sure you realize that what you heard is not what I meant."
"Penetrating so many secrets, we cease to believe in the unknowable. But there it sits nevertheless, calmly licking its chops."
"Man's knowledge makes another leap through the test of practice. This leap is more important than the previous one. For it is this leap alone that can prove the correctness or incorrectness of the first leap in cognition, i.e., of the ideas, theories, policies, plans or measures formulated in the course of reflecting the objective external world. There is no other way of testing truth. Furthermore, the one and only purpose of the proletariat in knowing the world is to change it. Often, correct knowledge can be arrived at only after many repetitions of the process leading from matter to consciousness and then back to matter, that is, leading from practice to knowledge and then back to practice."
"Each part of the mind sees only a little of what happens in some others, and that little is swiftly refined, reformulated and "represented." We like to believe that these fragments have meanings in themselves—apart from the great webs of structure from which they emerge—and indeed this illusion is valuable to us qua thinkers—but not to us as psychologists—because it leads us to think that expressible knowledge is the first thing to study."
"Beyond the drumfire of daily crisis, therefore, there is arising the outlines of a robust and vital world community, founded on nations secure in their own independence, and united by their allegiance to world peace. It would be foolish to say that this world will be won tomorrow, or the day after. The processes of history are fitful and uncertain and aggravating. There will be frustrations and setbacks. There will be times of anxiety and gloom. The specter of thermonuclear war will continue to hang over mankind; and we must heed the advice of Oliver Wendell Holmes of "freedom leaning on her spear" until all nations are wise enough to disarm safely and effectively. Yet we can have a new confidence today in the direction in which history is moving. Nothing is more stirring than the recognition of great public purpose. Every great age is marked by innovation and daring--by the ability to meet unprecedented problems with intelligent solutions. In a time of turbulence and change, it is more true than ever that knowledge is power; for only by true understanding and steadfast judgment are we able to master the challenge of history."
"All types of knowledge, ultimately mean self knowledge."
"I think that asking “what's the point?” when referring to the contents of a study or research project can be indicative of a utilitarian, pragmatic, consumerist mindset. I believe that advanced civilizations should leave room for knowledge as a value in itself."
"When I speak of knowledge, as you know, I am speaking of that dark and true depth which understanding serves, waits upon, and makes accessible through language to ourselves and others. It is this depth within each of us that nurtures vision."
"Civilization enables us constantly to profit from knowledge which we individually do not possess and because each individual's use of his particular knowledge may serve to assist others unknown to him in achieving their ends that men as members of civilized society can pursue their individual ends so much more successfully than they could alone."
"But history may well remember this as a week for an act of lesser immediate impact, and that is the decision by the United States and the Soviet Union to seek concrete agreements on the joint exploration of space. Experience has taught us that an agreement to negotiate does not always mean a negotiated agreement. But should such a joint effort be realized, its significance could well be tremendous for us all. In terms of space science, our combined knowledge and efforts can benefit the people of all the nations: joint weather satellites to provide more ample warnings against destructive storms--joint communications systems to draw the world more closely together--and cooperation in space medicine research and space tracking operations to speed the day when man will go to the moon and beyond. But the scientific gains from such a joint effort would offer, I believe, less realized returns than the gains for world peace. For a cooperative Soviet-American effort in space science and exploration would emphasize the interests that must unite us, rather than those that always divide us. It offers us an area in which the stale and sterile dogmas of the cold war could be literally left a quarter of a million miles behind. And it would remind us on both sides that knowledge, not hate, is the passkey to the future--that knowledge transcends national antagonisms--that it speaks a universal language--that it is the possession not of a single class, or of a single nation or a single ideology, but of all mankind."
"No human mind can comprehend all the knowledge which guides the actions of society."
"We may be proud as a nation of our record in scientific achievement--but at the same time we must be impressed by the interdependence of all knowledge. I am certain that every scholar and scientist here today would agree that his own work has benefited immeasurably from the work of the men and women in other countries. The prospect of a partnership with Soviet scientists in the exploration of space opens up exciting prospects of collaboration in other areas of learning. And cooperation in the pursuit of knowledge can hopefully lead to cooperation in the pursuit of peace."
"I hold that every bit of definite knowledge has to have a mathematical aspect"
"No one who examines the modern world can doubt that the great currents of history are carrying the world away from the monolithic idea towards the pluralistic idea--away from communism and towards national independence and freedom. No one can doubt that the wave of the future is not the conquest of the world by a single dogmatic creed but the liberation of the diverse energies of free nations and free men. No one can doubt that cooperation in the pursuit of knowledge must lead to freedom of the mind and freedom of the soul."
"What is the difference between merely knowing (or remembering, or memorizing) and understanding? ...A thing or idea seems meaningful only when we have several different ways to represent it–different perspectives and different associations. ...Then we can turn it around in our minds, so to speak: however it seems at the moment, we can see it another way and we never come to a full stop. In other words, we can 'think' about it. If there were only one way to represent this thing or idea, we would not call this representation thinking."
"Charles Hartshorne, "Charles Hartshorne, Philosophy," in interview with Steven Vita, Veery journal (1996)"
"Knowing is the task of Subjects, not of objects. It is as a subject, and only as such, that a man or woman can really know. In the learning process the only person who really learns is s/he who appropriates what is learned, who apprehends and thereby re-invents that learning; s/he who is able to apply the appropriated learning to concrete existential situations. On the other hand, the person who is filled by another with "contents" whose meaning s/he is not aware of, which contradict his or her way of being in the world, cannot learn because s/he is not challenged."
"The best student in physics or mathematics, at school or university, is not one who memorizes formulae but one who is aware of the reason for them. For students, the more simply and docilely they receive the contents with which their teachers "fill" them in the name of knowledge, the less they are able to think and the more they become merely repetitive. The best philosophy student is not one who discourses, "ipsis verbis," on the philosophy of Plato, Marx, or Kant but one who thinks critically about their ideas and takes the risk of thinking too."
"Knowing, whatever its level, is not the act by which a subject transformed into an object docilely and passively accepts the contents others give or impose on him or her. Knowledge, on the contrary, necessitates the curious presence of subjects confronted with the world. It requires their transforming action on reality. It demands a constant searching. It implies invention and reinvention. It claims from each person a reflection on the very act of knowing."
"Various attempts have been made in recent years to state necessary and sufficient conditions for someone's knowing a given proposition. The attempts have often been such that they can be stated in a form similar to the following: (a) S knows that P IFF (i) P is true, (ii) S believes that P, and (iii) S is justified in believing that P. ... These ... examples show that definition (a) does not state a sufficient condition for someone's knowing a given proposition."
"Knowledge is a deadly friend, If no one sets the rules. The fate of all mankind I see, Is in the hands of fools."
"We should admit rather that power produces knowledge (and not simply by encouraging it because it serves power or by applying it because it is useful); that power and knowledge directly imply one another."
"Nothing can be achieved without knowledge, and yet everything can be achieved just through a pure heart."
"There's no earthly way of knowing Which direction we are going There's no knowing where we're rowing Or which way the river's flowing Is it raining? Is it snowing? Is a hurricane a-blowing? Not a speck of light is showing So the danger must be growing Are the fires of hell a-glowing? Is the grisly reaper mowing? Yes, the danger must be growing 'Cause the rowers keep on rowing And they're certainly not showing Any signs that they are slowing!"
"And by the way, it’s knowledge that moves mountains, you know, not faith."
"Knowledge makes people special. Knowledge enriches life itself."
"Man's need of self-esteem entails the need for a sense of control over reality – but no control is possible in a universe which, by one's own concession, contains the supernatural, the miraculous and the causeless, a universe in which one is at the mercy of ghosts and demons, in which one must deal, not with the unknown, but with the unknowable; no control is possible if man proposes, but a ghost disposes; no control is possible if the universe is a haunted house."
"A man of knowledge lives by acting, not by thinking about acting... Thus a man of knowledge sweats and puffs and if one looks at him he is just like an ordinary man, except that the folly of his life is under his control."
"Men are four: He who knows not and knows not he knows not, he is a fool—shun him; He who knows not and knows he knows not, he is simple—teach him; He who knows and knows not he knows, he is asleep—wake him; He who knows and knows he knows, he is wise—follow him!"
"Knowledge about the process being modeled starts fairly low, then increases as understanding is obtained and tapers off to a high value at the end."
"The human sciences have to assume at least an equal responsibility in establishing the foundations of knowledge."
"How can the unknown merit reverence? In other words how can you revere that of which you are ignorant? At the same time, it would be ridiculous to propose that what we know merits reverence. What we know merits any one of a number of things, but it stands to reason reverence isn't one of them. In other words, apart from the known and the unknown, what else is there?"
"Knowledge is indivisible. When people grow wise in one direction, they are sure to make it easier for themselves to grow wise in other directions as well. On the other hand, when they split up knowledge, concentrate on their own field, and scorn and ignore other fields, they grow less wise — even in their own field."
"There's nothing you can know that isn't known Nothing you can see that isn't shown There's nowhere you can be that isn't where you're meant to be It's easy"
"One only begins to comprehend when one begins to stop trying to know."
"It is not my place to tell you whether there is indefeasible ignorance of ultimate reality. I am ignorant of whether there is or is not. But you should think of these things because there are no things more important, though there are no questions more difficult or less answerable. But one's whole life may be changed if one changes his mind about these questions."
"Nur dem, der GlĂĽck verachtet, wird Erkenntnis."
"All schools, all colleges, have two great functions: to confer, and to conceal, valuable knowledge. The theological knowledge which they conceal cannot justly be regarded as less valuable than that which they reveal. That is, when a man is buying a basket of strawberries it can profit him to know that the bottom half of it is rotten."
"Somewhere, something incredible is waiting to be known."
"Under the world view possessed by medieval scholars, the path of learning was a path of self-deprecation. … An opposite conception comes in with Bacon’s “knowledge is power.” If the aim of knowledge is domination, it is hardly to be supposed that the possessors of knowledge will be indifferent to their importance. On the contrary, they begin to swell; the seek triumphs in the material world (knowledge being meanwhile necessarily degraded to skills) which inflate their egotism and self-consideration. Such is a brief history of how knowledge passes from a means of spiritual redemption to a basis for intellectual pride."