In a word, to perceive an object abstractly means not to perceive some aspects of it. It clearly implies selection of some attributes, rejection of other attributes, creation or distortion of still others. We make of it what we wish. We create it.

Education is learning to grow, learning what to grow toward, learning what is good and bad, learning what is desirable and undesirable, learning what to choose and what not to choose.

If you only have a hammer, you tend to see every problem as a nail.

What shall we think of a well-adjusted slave?

We must understand love; we must be able to teach it, to create it, to predict it, or else the world is lost to hostility and to suspicion.

We must remember that knowledge of one’s own deep nature is also simultaneously knowledge of human nature in general.

To the man who only has a hammer, everything he encounters begins to look like a nail.