Every time you look up at the sky, every one of those points of light is a reminder that fusion power is extractable from hydrogen and other light elements, and it is an everyday reality throughout the Milky Way Galaxy.

There are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths.

Our concern for the future can be tested by how well we support our libraries.

Even through your hardest days, remember we are all made of stardust.

Clutching our crystals and religiously consulting our horoscopes, our critical faculties in steep decline, unable to distinguish between what's true and what feels good, we slide, almost without noticing, into superstition and darkness.

It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.

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