Nothing is destroyed until it is replaced.

The only real life is the collective life of the race; individual life has no existence except as an abstraction.

In mathematics we find the primitive source of rationality; and to mathematics must the biologists resort for means to carry out their researches.

Humanity is always made up of more dead than living.

But now, I, August Comte, have discovered the truth. Therefore, there is no longer any need for freedom of thought or freedom of the press. I want to rule and to organize the whole country.

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.