Each department of knowledge passes through three stages. The theoretic stage; the theological stage and the metaphysical or abstract stage.

Ideas govern the world, or throw it into chaos.

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

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

Indeed, every true science has for its object the determination of certain phenomena by means of others, in accordance with the relations which exist between them.

The dead governs the living.