Sólo hay una guerra que puede permitirse el ser humano: la guerra contra su extinción - Isaac Asimov

No me considero como un ser de inteligencia subnormal, pero la cuestión es que su vaga conferencia no es muy reveladora.

Congratulations on the new library, because it isn't just a library. It is a space ship that will take you to the farthest reaches of the Universe, a time machine that will take you to the far past and the far future, a teacher that knows more than any human being, a friend that will amuse you and console you — and most of all, a gateway, to a better and happier and more useful life.

[Letters of Note; Troy (MI, USA) Public Library, 1971]

I write for the same reason I breathe - because if I didn't, I would die. — Isaac Asimov