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

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

The word right should be excluded from political language, as the word cause from the language of philosophy.

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.

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

Nothing is destroyed until it is replaced.

C'este donc par l'étude des mathématiques, et seulement par elle, que l'on peut se faire une idée juste et approfondie de ce que c'est qu'une science.