Humans may be the only creatures on Earth who spend significant time thinking about the fact that someday their lives will end.

What does immortality mean to me? That we all want more time; and we want it to be quality time.

Perhaps the thing that makes humans truly unique on Earth is that we are never satisfied with our situation; maybe that is what's taken us so far.

Fear of the unknown is a terrible fear.

Indifference is the strongest force in the universe. It makes everything it touches meaningless. Love and hate don't stand a chance against it.

There's more to me, more to the universe, than I suspected. Room for all the dreams I ever had, and all the nightmares...heroes in the gutters and in the mirror; saints in the frozen wasteland; fools and liars on the throne of wisdom, and hands reaching out in hunger that will never be filled.

All [people] are intolerant.... Only they're intolerant of different things.