I was relaxing in a pub with a close mentor of mine, René Descartes, enjoying a lager. The bar manager asked us if we'd like another round before closing time. 'I think not,' Descartes said, and vanished in a puff of logic.
I was with another of my colleagues, Jean-Paul Sartre, in the local café, helping him revise his draft of Being and Nothingness. He asked the waitress for a cup of coffee with no cream. The waitress replied, 'I'm sorry, Jean-Paul, but we're out of cream. How about with no milk?'