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The more a man thinks the better adapted he becomes to thinking, and education is nothing if it is not the methodical creation of the habit of thinking. Precisely. Theoretically, education is a mental training aiming at greater intellectual elasticity, but the question is whether education does not often strain, instead of train, a mind.
For centuries knowledge meant proven knowledge... Einstein's results again turned the tables and now very few philosophers or scientists still think that scientific knowledge is, or can be, proven knowledge. But few realize that with this the whole classical structure of intellectual values falls in ruins and has to be replaced.