"In science it often happens that scientists say, "You know that's a really good argument; my position is mistaken," and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion."

"Only while sleeping one makes no mistakes. Making mistakes is the privilege of the active—of those who can correct their mistakes and put them right."

"A man of genius makes no mistakes. His errors are volitional and are the portals to discovery."

"Mistakes are the inevitable lot of mankind."

"She had an unequalled gift, especially pen in hand, of squeezing big mistakes into small opportunities."

"The greatest mistake you can make in life is to be continually fearing you will make one."

"No mans error becomes his own Law; nor obliges him to persist in it."

"The road to wisdom? Well, it's plain and simple to express: Err, and err, and err again. But less, and less, and less."

"Everyone thinks I'm a smart arse who can solve any bloody problem. I'm not. I'm just a very old businessman and a very experienced businessman who made every mistake in the book and can recognise one when I see one."

"My heartache, is my mistake you see."

"The state sometimes makes mistakes. When one of these mistakes occurs, a decline in collective enthusiasm is reflected by a resulting quantitative decrease of the contribution of each individual, each of the elements forming the whole of the masses. Work is so paralysed that insignificant quantities are produced. It is time to make a correction."

"In the margin for error lies all our room for maneuver."

"Amerika ist ein Fehler, zugegeben ein gigantischer Fehler, aber nichtsdestotrotz ein Fehler."

"Mistakes are a part of being human. Appreciate your mistakes for what they are: precious life lessons that can only be learned the hard way. Unless it's a fatal mistake, which, at least, others can learn from."

"It is a capital mistake to theorise before one has data."

"If errors were what you watch, O Jah,"

"For my errors loom over my head;"

"Hell, that's why they make erasers."

"Other kings let their ministers make their mistakes for them, but Louis insisted on making the important mistakes personally."

"Let go the lure The striving to unmake;Behold the truth Whenever heart may ache There is a glory In a great mistake."

"主忠信。毋友不如己者。過，則勿憚改。"

"When you find your path, you must not be afraid. You need to have sufficient courage to make mistakes. Disappointment, defeat, and despair are the tools God uses to show us the way."

"A man looking at a hippopotamus may sometimes be tempted to regard a hippopotamus as an enormous mistake; but he is also bound to confess that a fortunate inferiority prevents him personally from making such mistakes."

"The whole modern world has divided itself into Conservatives and . The business of Progressives is to go on making mistakes. The business of the Conservatives is to prevent the mistakes from being corrected."

"No matter how many mistakes you make or how slow you progress, you are still way ahead of everyone who isn’t trying."

"Don't make the same mistake twice seems to indicate three mistakes, doesn't it? First you make the mistake. Then you make the same mistake. Then you make the same mistake twice. If you simply say, "Don't make the same mistake," you'll avoid the first mistake."

"You seemed to be listening to me, not to find out useful information, but to try to catch me in a logical fallacy. This tells us all that you are used to being smarter than your teachers, and that you listen to them in order to catch them making mistakes and prove how smart you are to the other students. This is such a pointless, stupid way of listening to teachers that it is clear you are going to waste months of our time before you finally catch on that the only transaction that matters is a transfer of useful information from adults who possess it to children who do not, and that catching mistakes is a criminal misuse of time."

"The criminal misuse of time was pointing out the mistakes. Catching them―noticing them―that was essential. If you did not in your own mind distinguish between useful and erroneous information, then you were not learning at all, you were merely replacing ignorance with false belief, which was no improvement. The part of the man's statement that was true, however, was about the uselessness of speaking up. If I know that the teacher is wrong, and say nothing, then I remain the only one who knows, and that gives me an advantage over those who believe the teacher."

"Every great mistake has a halfway moment, a split second when it can be recalled and perhaps remedied."

"If you have ever, like me, Missed the "r" and hit the "t", Addressing some fat blister As "Mt." instead of "Mr.", I trust you left it unamended? Splendid."

"An expert is a person who has found out by his own painful experience all the mistakes that one can make in a very narrow field."

"Every person do mistake every day, otherwise, if you deny the mistakes, we deny the human nature of the people..."

"Lack of recent information is responsible for more mistakes of judgment than erroneous reasoning."

"Vietnam was worse than immoral — it was a mistake."

"Any military commander who is honest with himself, or with those he's speaking to, will admit that he has made mistakes in the application of military power. He's killed people unnecessarily — his own troops or other troops — through mistakes, through errors of judgment. A hundred, or thousands, or tens of thousands, maybe even a hundred thousand. But, he hasn't destroyed nations. And the conventional wisdom is don't make the same mistake twice, learn from your mistakes. And we all do. Maybe we make the same mistake three times, but hopefully not four or five. There will be no learning period with nuclear weapons. You make one mistake and you're going to destroy nations."

"Gli spropositi Presto si fanno, ma poi spesso costano Il pentimento di tutta la vita."

"We do not have to live the same mistakes over again if we can look at them, learn from them, and build upon them."

"After it is all over, as stupid a fellow as I am can see that mistakes were made. I notice, however, that my mistakes are never told me until it is too late."

"Some people use up valuable time by endlessly weighing pros and cons for fear of taking a wrong step. Making “mistakes” can be a great time-saver. You find out what works by trying. You get rid of unrealistic goals by having tried and failed to accomplish them. For the rest of your life you might have continued to cherish the dream of writing poetry. But now that you’ve spent several evenings working steadily at it, you can assure yourself that given your personality, poetry is impossible—at least for the present. Forget it and find a more realistic goal instead. What may seem defeating at first is really constructive: You’re building bridges that will eventually take you closer to where you really want to be."

"Every irregularity is not erroneous."

"If we can see our difficulties, there is a way of resolving them, or the hope of a way."

"I feel anxious for the fate of our monarchy, or democracy, or whatever is to take place. I soon get lost in a labyrinth of perplexities; but, whatever occurs, may justice and righteousness be the stability of our times, and order arise out of confusion. Great difficulties may be surmounted by patience and perseverance."

"Let us sacrifice our today so that our children can have a better tomorrow."

"If you want to shine like a sun, first burn like a sun."

"Patience and perseverance have a magical effect before which difficulties disappear and obstacles vanish."