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"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."
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"At the end of all spiritual paths, there lies only a cold graveyard; the path of science is the only path that may give you something better than this!"

"It is a strange fact, incidentally, that religious apologists love the anthropic principle. For some reason that makes no sense at all, they think it supports their case. Precisely the opposite is true. The anthropic principle, like natural selection, is an alternative to the design hypothesis. It provides a rational, design-free explanation for the fact that we find ourselves in a situation propitious to our existence."

"It has become almost a cliche to remark that nobody boasts of ignorance of literature, but it is socially acceptable to boast ignorance of science and proudly claim incompetence in mathematics."

"Darwin gives courage to the rest of science that we shall end up understanding literally everything, springing from almost nothing - a thought extremely hard to comprehend and believe."

"If you try and take a cat apart to see how it works, the first thing you have on your hands is a non-working cat."

"Light and the human is poorly understood by the astronomicalprofession, with many astronomers not understanding which light bulbs they should have in their ownhomes and offices! It is embarrassing that astronomers do not understand the many forms of artificiallighting that they are exposed to every day and how it affects them."
Explore more quotes by Jean Piaget


"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."


"In genetic epistemology, as in developmental psychology, too, there is never an absolute beginning."


"It is with children that we have the best chance of studying the development of logical knowledge, mathematical knowledge, physical knowledge, and so forth."


"Logic and mathematics are nothing but specialised linguistic structures."


"Knowing reality means constructing systems of transformations that correspond, more or less adequately, to reality."


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


"Our problem, from the point of view of psychology and from the point of view of genetic epistemology, is to explain how the transition is made from a lower level of knowledge to a level that is judged to be higher."
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