NYT: When Sartre Talked to Crabs (It Was Mescaline)

Highlights: Sartre: "Yeah, after I took mescaline, I started seeing crabs around me all the time. They followed me in the streets, into class. I got used to them. I would wake up in the morning and say, “Good morning, my little ones, how did you sleep?” I would talk to them all the time. I would say, “O.K., guys, we’re going into class now, so we have to be still and quiet,” and they would be there, around my desk, absolutely still, until the bell rang.... 

But after I finished school, I began to think I was going crazy, so I went to see a shrink, a young guy then with whom I have been good friends ever since, Jacques Lacan. We concluded that it was fear of being alone, fear of losing the camaraderie of the group."

http://www.nytimes.com/2009/11/15/weekinreview/15grist.html