Note to Jean-Paul Sartre, declining the prize in 1964:

Last week the auto-biography of Lars Gyllensten - long time member of the Nobel Prize committee - was published and it revealed an interesting twist in this story. It turned out that the French philosopher in 1975 had written a letter to the Nobel Prize committee, saying that he had changed his mind about the prize, at least when it came to the money (approx $1M). Would it be possible to receive the prize, or the money, after 11 years ?

The answer was "No".