Jean-Paul Sartre was sitting at a café table working. A waiter approached him

‘Can I get you something to drink, Monsieur Sartre?’ he asked.
‘Yes, I’d like a cup of coffee with sugar, but no cream’, the philosopher replied.

A few minutes later, however, the water returned and said,

‘I’m sorry, Monsieur Sartre, we are all out of cream — how about with no milk?’