Teaching means creating situations where structures can be discovered.
Children have real understanding only of that which they invent themselves, and each time that we try to teach them too quickly, we keep them from reinventing it themselves.
The more we try to improve our schools, the heavier the teaching task becomes; and the better our teaching methods the more difficult they are to apply.
It was while teaching philosophy that I saw how easily one can say ... what one wants to say. ... In fact, I became particularly aware if the dangers of speculation ... It's so much easier than digging out the facts. You sit in your office and build a system. But with my training in biology, I felt this kind of undertaking precarious.