Which mathematicians write exceptionally well or exceptionally clearly? (Individual books or articles would also be acceptable.) [more inside]
So, physicists like Brian Greene, Lisa Randall, Kip Thorne, and others have written books aimed at an interested lay audience. What are similar books written by mathematicians? I'm aware of Godel, Escher & Bach. And that's about it.
Who could this be? A relatively famous scientist or mathematician who was a German refugee in the Second World War, whose name sounds something like Buchholt? [more inside]