"Let’s hope that no system of theory of systems will ever eliminate the other systems – that no approach will be promoted to a dogma, and no group of scientists will become the high priests. Shouldn’t we rather let a hundred flowers bloom...?"

"A system is never finished being developed until it ceases to be used."

"We were doing incremental development as early as 1957, in Los Angeles, under the direction of Bernie Dimsdale [at IBM's ServiceBureau Corporation]. He was a colleague of John von Neumann, so perhaps he learned it there, or assumed it as totally natural. I do remember Herb Jacobs (primarily, though we all participated) developing a large simulation for Motorola, where the technique used was, as far as I can tell, indistinguishable from XP."

"When program developers are not territorial about their code and encourage others to look for bugs and potential improvements, progress speeds up dramatically."

"I believe, however, that humans are the only animals that we know who invents tools for working together - and they have done that as long as we have considered them human."

"General systems theory is considered as a formal theory (Mesarovic, Wymore), a methodology (Ashby, Klir), a way of thinking (Bertalanffy, Churchman), a way of looking at the world (Weinberg), a search for an optimal simplification (Ashby, Weinberg), didactic method (Boulding, Klir, Weinberg), metalanguage (Logren), and profession (Klir)."

"The power of the Ten Commandments is magnified if you remember the Helpful Model: No matter how it looks, everyone is trying to be helpful."

"If the software doesn't have to work, you can always meet any other requirement."

"A controller that cannot control itself is worse than no controller at all: If you cannot manage yourself, you have no business managing others."

"Quality is value to some person"

"Things are the way they are because they got that way"

"Don't try to be better than others. Try to be better than yourself."

"Disobey this phrase."

"Everything can be seen as a system because there is nothing you cannot ."

"You shouldn't compete against others. You should compete against yourself."

"A one-night-stander is someone who does not dare to explore the full potential of a relationship, just like a child who is afraid to go to the deep part of the pool. The latter does not want to learn how to swim, the former does not want to learn how to live."

"All meaning is for an observer."

"Science, as an institution, cannot be independent of human passions."

"We shouldn't see ourselves as ‘controllers' of the world, but as ‘actors' in the world."

"All violence stems from fear"

"I do not make any ontological claims. The moment you speak about them, they are already epistemology."

"People fail to achieve goals not because of lack of abilities, but because of lack of determination. (any ability can be learned)."

"Just because it has always been that way does not mean that it will always be so."

"The more I know, the better I realize how little we know."

"Finding your path is part of your path."

"Science deals with epistemology, not with ontology."

"If only cars were fueled by road rage..."

"People fear/hate other nations only when they don't know them."

"The easiest way to cope with complexity is not having it."

"Tendencies tend to change."

"Life is not meant to be perfect."

"Even if you do everything a woman wants, it will not be enough. But of course, this is no reason for not doing it."

"Only misery is for free."

"When I am a part of the herd I cannot see the stampede."

"Every joy brings the sorrow of its absence in its wake."

"To know your limits you need to go beyond them."

"There is no game in which you cannot cheat."

"You should make life fit to you, not to make you fit life..."

"Others are mirrors of one's soul."

"Who is stronger: the one who gives the blow, or the one who endures it?"

"Life is a constant adaptation."

"If something has an explanation, you can explain it. If it has no explanation, you should explain why you cannot explain it."

"How can we ask ourselves how can we ask ourselves?"

"Objects do not depend on the concepts we have of them."

"When we are children, we think that adults know how the world works. When we become adults, we know enough about the world to know that we know nothing about it..."

"El sentido de la vida depende no de donde se encuentre uno sino de adonde se dirija."

"Knowledge brings more questions than answers."

"Winning or losing does not matter as much as what you learn from it."

"All human relationships are based on misunderstandings."