A recent comment thread on Crooked Timber about the new Texas curriculum guidelines led me (once again inwardly bemoaning certain deficiencies in my education) to glance at the long-ish Wikipedia entry on Voltaire. At the end of the section headed "Legacy," there is this: "Voltaire was also known to have been an advocate for coffee, as he was purported to have drunk the beverage at least 30 times per day. It has been suggested that high amounts of caffeine acted as a mental stimulant to his creativity" (citing a 2005 Washington Monthly review of a book on the history of coffee).
Thirty times a day? Yikes. I drink one cup of coffee in the morning -- and not even every morning, sometimes forgoing it in favor of tea. But then, I'm no Voltaire (chorus: Boy, you can say that again!).