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"Scientific thought, then, is not momentary; it is not a static instance; it is a process."
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"The moment comes when a character does or says something you hadn't thought about. At that moment he's alive and you leave it to him."

"Never underestimate the power of a simple thought."

"I took thought, and invented what I conceived to be the appropriate title of 'agnostic'."

"I thought it completely absurd to mention my name in the same breath as the presidency."

"In Socrates' thought the two marks of individual self-consciousness appear; it is practical and it is social."
Explore more quotes by Jean Piaget


"To express the same idea in still another way, I think that human knowledge is essentially active."


"The first type of abstraction from objects I shall refer to as simple abstraction, but the second type I shall call reflective abstraction, using this term in a double sense."


"During the earliest stages the child perceives things like a solipsist who is unaware of himself as subject and is familiar only with his own actions."


"On the one hand, there are individual actions such as throwing, pushing, touching, rubbing. It is these individual actions that give rise most of the time to abstraction from objects."


"Logical positivists have never taken psychology into account in their epistemology, but they affirm that logical beings and mathematical beings are nothing but linguistic structures."


"The self thus becomes aware of itself, at least in its practical action, and discovers itself as a cause among other causes and as an object subject to the same laws as other objects."


"Scientific knowledge is in perpetual evolution; it finds itself changed from one day to the next."


"Reflective abstraction, however, is based not on individual actions but on coordinated actions."


"From this time on, the universe is built up into an aggregate of permanent objects connected by causal relations that are independent of the subject and are placed in objective space and time."


"The principle goal of education in the schools should be creating men and women who are capable of doing new things, not simply repeating what other generations have done."
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