“Merely quantitative differences, beyond a certain point, pass into qualitative changes.”

“There is a very real relationship, both quantitatively and qualitatively, between what you contribute and what you get out of this world.”

“Beyond a certain point there is no return. This point has to be reached.”

“Time does not pass, it merely changes.”

“A man's death makes everything certain about him. Of course, secrets may die with him. And of course, a hundred years later somebody looking through some papers may discover a fact which throws a totally different light on his life and of which all the people who attended his funeral were ignorant. Death changes the facts qualitatively but not quantitatively. One does not know more facts about a man because he is dead. But what one already knows hardens and becomes definite. We cannot hope for ambiguities to be clarified, we cannot hope for further change, we cannot hope for more. We are now the protagonists and we have to make up our minds.”

“Beyond a certain point, the music isn't mine anymore. It's yours.”