Do you see this egg? With this you can topple every theological theory, every church or temple in the world.

In any country where talent and virtue produce no advancement, money will be the national god. Its inhabitants will either have to possess money or make others believe that they do. Wealth will be the highest virtue, poverty the greatest vice.

There comes a moment during which almost every girl or boy falls into melancholy; they are tormented by a vague inquietude which rests on everything and finds nothing to calm it. They seek solitude; they weep; the silence to be found in cloister attracts them: the image of peace that seems to reign in religious houses seduces them. They mistake the first manifestations of a developing sexual nature for the voice of God calling them to Himself; and it is precisely when nature is inciting them that they embrace a fashion of life contrary to nature's wish.

I feel, I think, I judge; therefore, a part of organized matter like me is capable of feeling, thinking, and judging.

The enjoyment of freedom which could be exercised without any motivation would be the real hallmark of a maniac.

When we know to read our own hearts, we acquire wisdom of the heartsof others.

Superstition is more injurious to God than atheism.