I have a fantasy where Ted Turner is elected President but refuses because he doesn't want to give up power.

Some things have eternal value, and compassion is one of them. I hope we never lose that. Compassion for humans as well as animals.

Astronomy, as nothing else can do, teaches men humility.

The limits of the possible can only be defined by going beyond them into the impossible.

Anything that is theoretically possible will be achieved in practice, no matter what the technical difficulties are, if it is desired greatly enough.

Until we get rid of religion, we won't be able to conduct the search for God.

Any sufficiently advanced technology is indistinguishable from magic.