Everything is relative; and only that is absolute.

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

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.

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

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.

Language forms a kind of wealth, which all can make use of at once without causing any diminution of the store, and which thus admits a complete community of enjoyment; for all, freely participating in the general treasure, unconsciously aid in its preservation.