“To be is to do.”

The greatest human quest is to know what one must do in order to become a human being.

Prudence reproaches; conscience accuses.

From such crooked wood as that which man is made of, nothing straight can be fashioned.

Dare to know! Have the courage to use your own intelligence!

Space and time are the framework within which the mind is constrained to construct its experience of reality.

Settle, for sure and universally, what conduct will promote the happiness of a rational being.

All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

Since the human race’s natural end is to make steady cultural progress, its moral end is to be conceived as progressing toward the better. And this progress may well be occasionally interrupted, but it will never be broken off.

The death of dogma is the birth of morality.

The outcome of an act commonly influences our judgment about its rightness, even though the former was uncertain, while the latter is certain.

Art is purposiveness without purpose.

He who would know the world must first manufacture it.

We are not rich by what we possess but by what we can do without.

It is impossible to conceive anything at all in the world, or even out of it, which can be taken as good without qualification, except a good will.

I had to deny knowledge in order to make room for faith.

If God should really speak to man, man could still never know that it was God speaking.

When our thoughts – which bring actions – are filled with hate against anyone, Negro or white, we are in a living hell. That is as real as hell will ever be.

For evil deeds may better than bad words be borne.

The hands of the guilty don’t necessarily tremble; only in stories does a dropped glass betray agitation. Tension is more often shown in the studied action.

I would not leave anything to a man of action as he would be tempted to give up work; on the other hand, I would like to help dreamers as they find it difficult to get on in life.

Who would ever care to do brave deed, Or strive in virtue others to excel, If none should yield him his deserved meed Due praise, that is the spur of doing well? For if good were not praised more than ill, None would choose goodness of his own free will.

Successful people aren’t born that way. They become successful by establishing the habit of doing things unsuccessful people don’t like to do. The successful people don’t always like these things themselves; they just get on and do them.

Love may be likened to a disease in this respect, that when it is denied a vent in one part, it will certainly break out in another; hence what a woman’s lips often conceal, her eyes, her blushes, and many little involuntary actions betray.

So many of our conversations (about affirmative action) have been dishonest