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

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.

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.

Every science consists in the coordination of facts; if the different observations were entirely isolated, there would be no science.

It is straightforward—and never mind, for now, about plagues and famines: if God existed, and if he cared for humankind, he would never have given us religion.

Encouraging words are hands that pool others from the despair of life.

Arguing that the only problem with a free market is lack of competition, is like arguing that that the only problem with prostitution is that there aren't enough pimps.

I don't think it's meant for man to know everything at once.

It seems to me that there will be a point in out development or our evolution where you put your guns aside.

It took me 20 years to learn I couldn't tune too well. And by that time I was too rich to care.

What’s ready? Was Steinback ready? Hemingway? Shakespeare? Dickens? Jane Austen? They just did it, didn’t they?

I think I'm attracted to the mystics, to seeing needs in the world. I'm attracted to caring for people who are disenfranchised. I'm attracted to getting rid of worldly possessions.

art is not advocacy and advocacy is not art.

Have you lost your way? Don't be sad; be happy, because you will see new places, places that you have never been to! It is magical to lose the way!