To understand a science, it is necessary to know its history.

Positivism is a theory of knowledge according to which the only kind of sound knowledge available to human kind is that if science grounded in observation.

Nothing is destroyed until it is replaced.

The sacred formula of positivism: love as a principle, the order as a foundation, and progress as a goal.

Know yourself to improve yourself.

To reorganize society without God or King, by the systematic culture of Humanity.

Each department of knowledge passes through three stages. The theoretic stage; the theological stage and the metaphysical or abstract stage.

Everything is relative; and only that is absolute.

Woman is the most moral element in all humanity.

If we do not allow free thinking in chemistry or biology, why should we allow it in morals or politics?

Religion is an illusion of childhood, outgrown under proper education.

Miss Betsy is looking at me. Some jealousy sure, but every woman have that in them

Let us more and more insist on raising funds of love, of kindness, of understanding, of peace.

When dark, it's bright, when brightest, it's gone. When gone for good, so will I be.What am I?

The question is just as important as the answer.

The microscopes that magnified the tears, studied warts and all. Still life flows on.

If you would get exercise, go in search of the springs of life.

They don't get along with me, but I get along with other people.

everyone old enough to have a secret is entitled to have some place to keep it.

A writer's brain is like a magician's hat. If you're going to get anything out of it, you have to put something in it first.

The objective of false prophets and teachers of whatever stripe is...the influence and control of the minds of men.