All religions, arts and sciences are branches of the same tree.

A man should look for what is, and not for what he thinks should be.

Any man who can drive safely while kissing a pretty girl is simply not giving the kiss the attention it deserves.

Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction

A person who never made a mistake never tried anything new.

Insanity: doing the same thing over and over again and expecting different results.

We turn toward God only to obtain the impossible.

To insure the adoration of a theorem for any length of time, faith is not enough, a police force is needed as well.

Those who write clearly have readers, those who write obscurely have commentators.

Retaliation is related to nature and instinct, not to law. Law, by definition, cannot obey the same rules as nature.

You have to be very rich or very poor to live without a trade.

We rarely confide in those who are better than we are.

To abandon oneself to principles is really to die - and to die for an impossible love which is the contrary of love.

There will be no lasting peace either in the heart of individuals or in social customs until death is outlawed.

Real nobility is based on scorn, courage, and profound indifference.

What the world requires of the Christians is that they should continue to be Christians.

We call first truths those we discover after all the others.

The world is never quiet, even its silence eternally resounds with the same notes, in vibrations which escape our ears. As for those that we perceive, they carry sounds to us,...

One leader, one people, signifies one master and millions of slaves.

Methods of thought which claim to give the lead to our world in the name of revolution have become, in reality, ideologies of consent and not of rebellion.