Arthur C. Clarke Quotes on Idea (2 Quotes)

We have to abandon the idea that schooling is something restricted to youth. How can it be, in a world where half the things a man knows at 20 are no longer true at 40 - and half the things he knows at 40 hadn't been discovered when he was 20?

Sometimes I think we're alone in the universe, and sometimes I think we're not. In either case the idea is quite staggering.