We learn more when we are compelled to invent.

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

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

As you know, Bergson pointed out that there is no such thing as disorder but rather two sorts of order, geometric and living.

How can we, with our adult minds, know what will be interesting? If you follow the child...you can find out something new.

We learn more when we are compelled to invent.

Every time we teach a child something, we keep him from inventing it himself. On the other hand, that which we allow him to discover for himself will remain with him visible for the rest of his life.