How much more precious is a little humanity than all the rules in the world.

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.

What the genetic epistemology proposes is discovering the roots of the different varieties of knowledge, since its elementary forms, following to the next levels, including also the scientific knowledge.

The most developed science remains a continual becoming

When you teach a child something you take away forever his chance of discovering it for himself.

What we see changes what we know. What we know changes what we see.

Moral autonomy appears when the mind regards as necessary an ideal that is independent of all external pressures.