A question that sometimes drives me hazy: Am I, or the others, crazy?

Human history is in essence a history of ideas.

That man is the noblest creature may also be inferred from the fact that no other creature has yet contested this claim.

To live alone is the fate of all great souls.

Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.

If you want to know what a man's like, take a good look at how he treats his inferiors, not his equals.

Human nature is not totally fixed, but on any realistic scale, evolutionary processes are much too slow to affect it.

I just invent, then wait until man comes around to needing what I've invented.

A woman's chastity consists, like an onion, of a series of coats.

Dignity does not consist in possessing honours, but in deserving them.

Family not only need to consist of merely those whom we share blood, but also for those whom we'd give blood.

The whole universe is contained within a single human being – you.

People are more difficult to work with than machines. And when you break a person, he can't be fixed.

It is no measure of health to be well adjusted to a profoundly sick society.

The greatest sweetener of human life is Friendship. To raise this to the highest pitch of enjoyment, is a secret which but few discover.

Humanism and Divinity are as complementary to one another in the order of culture, as are Nature and Grace in the order of being.

Our true nationality is mankind.

As far as I knew white women were never lonely, except in books. White men adored them, Black men desired them and Black women worked for them.

The U.S. Census Bureau acknowledged this fact when it reported that those with a bachelor's degree earn on average $1 million more over their lifetime than those with only a high school diploma.

There is no come back to caves. We are too many.

A man is great by deeds, not by birth.