That's the way progress works: the more we build up these vast repertoires of scientific and technological understanding, the more we conceal them.

The larger question is, as virologist Jonas Salk once asked, "Are we being good ancestors?

Time travelers tend, as a group, to have a lot of hobbies.

...if your great-great-great-grandfather wanted to read his book after dark, some poor soul had to crawl around in a whale’s head for an afternoon.

Let's raise children who won't have to recover from their childhoods.

Investigating Koreiko's case might take a long time, " said Ostap. "God only knows how long. And since there is no God, nobody knows. We are in a terrible bind.

Behavior is math: Truth is found in the sum of its parts.

When we question our thoughts, we see that the craziness was never in the world, but in us.

Would [Betsy DeVos] be my first pick? No. Is she someone who has dedicated her life to education policy? Yes, actually, she has.

Ridicule is the deadliest weapon of the age.

I want to be like Bruce Springsteen or something, making songs that are relevant.

I never thought that someone would be teaching one of my fanzines. I never thought I'd be off to lecture at a college. It's still shocking to me.

Nuclear power must be dealt with irrationally. . . . Nuclear plants are carcinogens. Let's get that story out. . . . Their lies will catch up to them. We need endless Chernobyl reminders.

Give love, give help, give service, and give any little thing you can, but keep out barter.