On coping with his disability:

On his life outlook:

On science and religion:

On the place of humans in the cosmos:

On his diagnosis with ALS:

On perfection and making mistakes:

On the purpose of intelligence:

On what Albert Einstein said about black holes:

On the future of humanity:

On not giving up:

On the perils of scientific discovery:

On intelligence quotients (IQ):

On the existence of multiple universes:

On death:

On heaven and an afterlife: