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

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

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

“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.”

“Foresight of phenomenon and power over them depend on knowledge of their sequences, and not upon any notion we may have formed respecting their origin or inmost nature.”