You can get an Egg McMuffin all day; you just can't get the hamburger all day.

Wow, monitor lizards are pretty gnarly creatures. I want to go with the monitor lizard. That's just weird enough to be true. No?

I have thoughts every day that are themselves tweets.

There are books on my shelf that I'm not into. They are things I don't know anything about yet. It's going to lead me off into a new place. The books don't represent an interest; they represent a source of my ignorance.

No one with a living room radio that was a piece of furniture at the time would say, gee. I want to carry that around on my hip pocket. That was not a thought until NASA initiated this whole exercise. So there's an influence that's not just spinoff.

Some claim evolution is just a theory. As if it were merely an opinion. The theory of evolution, like the theory of gravity, is a scientific fact. Evolution really happened. Accepting our kinship with all life on Earth is not only solid science. In my view, it’s also a soaring spiritual experience.

I don't want people to say, 'Something is true because Tyson says it is true.' That's not critical thinking.