He developed "The Law Of Three Stages". He believed that society was constantly evolving, and that positivist scientific methods could be used to analyse society and discover the underlying social laws that govern human behaviour, with this knowledge we could cure the causes of social ills and better society. The evolution of society was in three stages:
- The Theocratic stage — Explanation of the world via personified deities. The Theocratic stage was broken down into three further stages:
- The Metaphysical stage — Explanation by impersonal abstract explanation (philosophy).
- The Positivist stage — Explanation by reason, rationality and the scientific method.