We live in the most probable of all possible worlds.

My advice to other disabled people would be, concentrate on things your disability doesn't prevent you doing well, and don't regret the things it interferes with. Don't be disabled in spirit, as well as physically.

[In the Universe it may be that] Primitive life is very common and intelligent life is fairly rare. Some would say it has yet to occur on Earth.

It is impossible to imagine a four-dimensional space. I personally find it hard enough to visualize a three-dimensional space!

The rate of progress is so rapid that what one learns at school or university is always a bit out of date. Only a few people can keep up with the rapidly advancing frontier of knowledge, and they have to devote their whole time to it and specialize in a small area. The rest of the population has little idea of the advances that are being made or the excitement they are generating.

Many people do not like the idea that time has a beginning, probably because it smacks of divine intervention.

The media need superheroes in science just as in every sphere of life, but there is really a continuous range of abilities with no clear dividing line.