Everything of importance has been said before by somebody who did not discover it.

No one who achieves success does so without acknowledging the help of others. The wise and confident acknowledge this help with gratitude.

The art of progress is to preserve order amid change and to preserve change amid order.

If a dog jumps into your lap, it is because he is fond of you; but if a cat does the same thing, it is because your lap is warmer.

There are no whole truths: All truths are half-truths.

Not ignorance, but ignorance of ignorance, is the death of knowledge.

Religion is the last refuge of human savagery.

Philosophy begins in wonder. And, at the end, when philosophic thought has done its best, the wonder remains.

...the self-satisfied dogmatism with which mankind at each period of its history cherishes the delusion of the finality of existing modes of knowledge.

Knowledge shrinks as wisdom grows.

Symbolism is no mere idle fancy or corrupt degeneration: it is inherent in the very texture of human life.

By striving to do the impossible, man has always achieved what is possible. Those who have cautiously done no more than they believed possible have never taken a single step forward.

I think you're all mad. But that's part and parcel of being an artistic genius, isn't it?

All children, except one, grow up.

Reason is one thing and faith is another and reason can as little be made a substitute for faith, as faith can be made a substitute for reason.

I get so tired of moral bookkeeping.

No one should advocate any peaceful suffering to black people, unless the black - white man is going to practice the same kind of peaceful suffering.

I came very close to quitting my job for the Bush-Cheney '04 campaign. I seriously considered packing up my office and heading home to Colorado.

Since the discovery of printing, knowledge has been called to power, and power has been used to make knowledge a slave.

A lot of Muslims, a lot of Arab Americans, Muslim Americans were very attracted to the Republican Party - conservative social values and so on. But Trump has horrified them.

You can be a little ungrammatical if you come from the right part of the country.