Mark Twain

The Christian Bible is a drug store. It's contents have remained the same but the medical practice continues. For 1,800 years these changes were slight—scarcely noticeable… The dull and ignorant physician day and night, and all the days and all the nights, drenched his patient with vast and hideous doses of the most repulsive drugs to be found in the store's stock… He kept him religion sick for eighteen centuries, and allowed him not a well day during all that time.
["Mark Twain and the Three R's, by Maxwell Geismar, p.107