https://en.wikipedia.org/wiki/Psychological_egoism https://en.wikipedia.org/wiki/Psychological_egoism At this point it is philosophical either way, so you aren

https://en.wikipedia.org/wiki/Psychological_egoism https://en.wikipedia.org/wiki/Psychological_egoism At this point it is philosophical either way, so you aren't going to get a citation confirming yours or his statements, but this isn't an unheard of belief.