Man is made or unmade by himself. By the right choice he ascends. As a being of power, intelligence, and love, and the lord of his own thoughts, he holds the key to every situation.

Great men are like eagles, and build their nest on some lofty solitude.

People demand freedom of speech as a compensation for the freedom of thought which they seldom use.

Our true nationality is mankind.

The world would be happier if men had the same capacity to be silent that they have to speak.

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

Though I love my country, I do not love my countrymen.

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

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

Progress of mankind is progress of mind and intellect.

The true measure of a man is how he treats someone who can do him absolutely no good.

No mortal can keep a secret. If the lips are silent, he chatters with his fingertips; betrayal oozes out of him at every pore.

The first human who hurled an insult instead of a stone was the founder of civilization.

I've learned that you can tell a lot about a person by the way (s)he handles these three things: a rainy day, lost luggage, and tangled Christmas tree lights.

The first time someone shows you who they are, believe them.

Men are anxious to improve their circumstances, but are unwilling to improve themselves; they therefore remain bound.

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

I can calculate the motion of heavenly bodies but not the madness of people.

Ninety-nine percent of who you are is invisible and untouchable.

Men always talk about the most important things to perfect strangers.

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