Alexis de Tocqueville on Islam

Alexis de Tocqueville (1805 – 1859) was a French political thinker and historian best known for his Democracy in America (appearing in two volumes: 1835 and 1840) and The Old Regime and the Revolution (1856). In both of these works, he analyzed the rising living standards and social conditions of individuals and their relationship to the market and state in Western societies. Democracy in America was published after his travels in the United States, and is today considered an early work of sociology and political science.

Here is Alexis de Tocqueville on Islam:

"I studied the Quran a great deal. I came away from that study with the conviction that by and large there have been few religions in the world as deadly to men as that of Muhammad. As far as I can see, it is the principal cause of the decadence so visible today in the Muslim world and, though less absurd than the polytheism of old, its social and political tendencies are in my opinion more to be feared, and I therefore regard it as a form of decadence rather than a form of progress in relation to paganism itself."

(Source)