A fun fact about Voltaire from Cracked.com:
Severe, deleterious caffeine intoxication sets in at 500 mg, so you’re going to have to slam a black venti with a Red Bull chaser to get properly wasted. Once you’ve risen to coffee-high nirvana, you’ll soon plummet to coffee-high hell. Symptoms of excessive caffeine usage include hallucinations, diarrhea, convulsions, vomiting and “confusion”…
Voltaire drank approximately 50 to 70 cups of coffee a day for inspiration. This level of caffeine intake is not recommended unless you happen to be a French Enlightenment philosopher.