I'm from the Midwest, and I loved my family. I had a very good time as a child, but I was also - I have a theory about Jews growing up in the Midwest, that there is an ultimately sort of wonderful avoidance of a lot of things, and a great acceptance of whatever is happening.
I have been threatened occasionally. But that happens to everybody who is writing this kind of things. Threats will come without fail. It might happen to the most 'innocent' texts. If it gets too much we call the police.
A mathematician, like a painter or poet, is a maker of patterns. If his patterns are more permanent than theirs, it is because they are made with ideas.