Coincidentally, I'm reading When Einstein Walked with Godel, and this anecdote is in there. Such an interesting man -- he's up there with Von Neumann for histo

Coincidentally, I'm reading When Einstein Walked with Godel, and this anecdote is in there. Such an interesting man -- he's up there with Von Neumann for historical figures I'd like to learn more about, as the work they develop is a form of first principles that a lot of modern thought is derived from. Any reccs on books to read, more focused on their theories than their lives?