Saturday, 26 February 
Went this morning to Mohameden College where twelve thousand pupils
studying the Caron and preparing to teache its doctrines to the benighted sons of men. I saw about two thousand of them in the court and college building reading their morning lesson. They wore the peculiar dress and Turban of the Mahomedan and presented a striking spectacle. If sincerity is any proof of the truth of their creed, they certainly give that proof-but alas! Sincerity is no proof. The most revolting imposture has been defended by equal earnestness and sincerity. The followers of the prophet can pray as loudly and point to as many miracles as the Christian can, they even exceed the Christian in religious attention to ceremony. We also went to see the Mohamden Bible house,- where you may see the Coran in all languages. It is a great sight. Two hundred millions of people are said to receive this Sacred Book, the Coran.
Frederick Douglass Diary (Tour of Europe and Africa) – Library of Congress