Monsieur Homais is the town pharmacist. He is vehemently anti-clerical and an atheist. He also practices medicine without a license, and although he pretends to be Charles Bovary's best friend, he actively undermines Bovary's medical practice by luring away his patients and by setting Charles up to attempt a difficult surgery, which fails and destroys Charles's professional credibility in Yonville.

"Madame Bovary" by Gustave Flaubert