My favorite definition of an intellectual: 'Someone who has been educated beyond his/her intelligence'.

There were some things that only time could cure. Evil men could be destroyed, but nothing could be done with good men who were deluded.

But he knew well enough that any man in the right circumstances could be dehumanised by panic.

We stand now at the turning point between two eras. Behind us is a past to which we can never return... The coming of the rocket brought to an end a million years of isolation... the childhood of our race was over and history as we know it began.

This is the first age that's ever paid much attention to the future, which is a little ironic since we may not have one.

No communication technology has ever disappeared, but instead becomes increasingly less important as the technological horizon widens.

The fact that we have not yet found the slightest evidence for life - much less intelligence - beyond this Earth does not surprise or disappoint me in the least. Our technology must still be laughably primitive, we may be like jungle savages listening for the throbbing of tom-toms while the ether around them carries more words per second than they could utter in a lifetime.