Knowledge is simply a kind of fuel; it needs the motor of understanding to convert it into power.

It must be, I thought, one of the race's most persistent and comforting hallucinations to trust that "it can't happen here" -- that one's own time and place is beyond cataclysm.

It's humiliating to be dependent, anyway, but it's still a poorer pass to have no one to depend on.

Knowledge is simply a kind of fuel; it needs the motor of understanding to convert it into power.

The essential quality of life is living' the essential quality of living is change; change is evolution; and we are part of it.

There was often a great deal of grown-up fuss that seemed disproportionate to causes.

Some quotations," said Zellaby, "are greatly improved by lack of context.