One of the dangers [that Donald Trump poses, due to the augmented risk of nuclear war] is unquestionable. Of the two existential threats - the threats to the termination of the species basically and most other species - one of them, climate change, on that I think there's no basis for discussion.

The reason I am a political radical is that I work on syntax. If I worked on semantics (which in fact I do), I'd be a good Thatcherite.

On the other hand, a lot of the internet - I don't know the percentage, but I am sure a great mass of internet use - is pretty superficial interaction amongst people. Its not necessarily a bad thing. A teenager wants to talk to her friend, that's fine, but I think it probably contributes to atomization, which is a threat to the society.

If you don't like what someone has to say, argue with them.

Since James Madison day (and long before), there have been constant struggles over "democratic governance".

In Mexico, a poor country, higher education is of quite good quality -- and is free. Ten years ago the government tried to impose small fees. There was a national student strike and the government backed down. High tuition is not an economic necessity, as is easy to show, but a debt trap is a good technique of indoctrination and control. And resisting this makes good sense.

Maybe the science is uncertain, maybe we don't have to worry about it. Climate change is the worst, but there's others.