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

— Auguste Comte

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

— Auguste Comte

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

— Auguste Comte

To understand a science, it is necessary to know its history.

— Auguste Comte