Wisdom is a kind of knowledge. It is knowledge of the nature, career, and consequences of human values.

Everyone who remembers his own education remembers teachers, not methods and techniques. The teacher is the heart of the educational system.

Tolerance always has limits - it cannot tolerate what is itself actively intolerant.

To silence criticism is to silence freedom.

I was guilty of judging capitalism by its operations and socialism by its hopes and aspirations; capitalism by its works and socialism by its literature.

The easiest rationalization for the refusal to seek the truth is the denial that truth exists.

Fear of death has been the greatest ally of tyranny past and present.

The difference between science and religion is that the former wishes to get rid of mysteries whereas the latter worships them.

Nonetheless, it still remains true that as a set of cognitive beliefs, religious doctrines constitute a speculative hypothesis of an extremely low order of probability.

In contrast to totalitarianism, democracy can face and live with the truth about itself.

Before impugning an opponent's motives, even when they legitimately may be impugned, answer his arguments.

Growing older is a precious commodity. Only a few can endure to achieve that distinguished distinction and quality.

If he exalts himself, I humble him. If he humbles himself, I exalt him. And I go on contradicting him Until he understands That he is a monster that passes all understanding.

The great adventures which our opponents offer is a voyage into the past. Progress is our heritage, not theirs. What is right for us as Democrats is also the right way for Democrats to win.

Other people do not owe me their availability.

The condition of our survival in any but the meagerest existence is our willingness to accommodate ourselves to the conflicting interests of others, to learn to live in a social world.

The being cannot be termed rational or virtuous, who obeys any authority, but that of reason.

All our advertising is propaganda, of course, but it has become so much a part of our life, is so pervasive, that we just don't know what it is propaganda for.

If God had wanted to be a big secret, He would not have created babbling brooks and whispering pines.

In the big picture, life has a gap in it. It just does. You don't go crazy trying to fill it.

Fortunately, cartooning is not a job. It's something like eating or sleeping.