I have never grown up, but I will never stop growing.

Those wanderers must have looked on Earth, circling safely in the narrow zone between fire and ice, and must have guessed that it was the favourite of the Sun's children.

It must be wonderful to be seventeen, and to know everything.

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.

The piece of equipment I'm most found off is my telescope. The other night I had a superb view of the moon.

Creationism, perhaps the most pernicious of the intellectual perversions now afflicting the American public.

We stand now at the turning point between two eras. Behind us is a past to which we can never return...