Conversation so far:
What two scholars influenced Émile Durkheim?
During his university studies at the École, Durkheim was influenced by two neo-Kantian scholars, Charles Bernard Renouvier and Émile Boutroux.
What principles did Charles Bernard Renouvier and Émile Boutroux have that influenced Émile Durkheim?
The principles Durkheim absorbed from them included rationalism, scientific study of morality, anti-utilitarianism and secular education.
What was Émile Durkheim's primary or main influence for inspiration on sociology?
A fundamental influence on Durkheim's thought was the sociological positivism of Auguste Comte.

Question: What was his secondary influence?
Self-contained rewrite: What was Émile Durkheim's secondary influence on sociology?