A zero-gravity flight is a first step toward space travel.

We could call order by the name of God, but it would be an impersonal God. There's not much personal about the laws of physics.

Computer viruses are alive.

It often happens that I have an idea, but then I try to fill in the intermediate steps and find they don't work, so I have to give it up.

Many people do not like the idea that time has a beginning, probably because it smacks of divine intervention. (The Catholic Church, on the other hand, seized on the big bang model and in 1951 officially pronounced it to be in accordance with the Bible.

Half the battle is just showing up.

The past, like the future, is indefinite and exists only as a spectrum of possibilities.