Because men, compared to male chimps, have such relatively small testicles (large testicles indicate a species where many males mate, one after the other, with the same female), we might guess that promiscuous societies were uncommon in the immediate human past.

In the deepest sense the search for extraterrestrial intelligence is a search for ourselves.

Those afraid of the universe as it really is, those who pretend to nonexistent knowledge and envision a Cosmos centered on human beings will prefer the fleeting comforts of superstition.

The total number of stars in the Universe is larger than all the grains of sand on all the beaches of the planet Earth.

There are in fact 100 billion galaxies, each of which contain something like a 100 billion stars. Think of how many stars, and planets, and kinds of life there may be in this vast and awesome universe.

Otherwise we don't run the government the government runs us

I am often amazed at how much more capability and enthusiasm for science there is among elementary school youngsters than among college students.