To read is to voyage through time.

I find science so much more fascinating than science fiction. It also has the advantage of being true.

A religion old or new, that stressed the magnificence of the universe as revealed by modern science, might be able to draw forth reserves of reverence and awe hardly tapped by the conventional faiths. Sooner or later such a religion will emerge.

We are, in the most profound sense, children of the Cosmos.

[Kepler] preferred the hard truth to his dearest illusions, and that is the heart of science.

Every star may be a sun to someone.

We are an intelligent species and the use of our intelligence quite properly gives us pleasure. In this respect the brain is like a muscle. When we think well, we feel good. Understanding is a kind of ecstasy.