"[T]he third point... What is taking place is actually a threat to the Republic... in one of two ways. The first possible failure mode is that some sort of a Maoist takeover could escape the colleges and universities and... it could take over the West... I find this unlikely... but what I do find very frightening is the possibility that the self-censorship is going to cause colleges and universities to fail in their mission to educate people how to think about difficult issues."