The dinosaurs became extinct because they didn't have a space program. And if we become extinct because we don't have a space program, it'll serve us right!

The dinosaurs became extinct because they didn't have a space program.

Dinosaurs are extinct today because they lacked opposable thumbs and the brainpower to build a space program.

Since, in the long run, every planetary civilization will be endangered by impacts from space, every surviving civilization is obliged to become spacefaring--not because of exploratory or romantic zeal, but for the most practical reason imaginable: staying alive... If our long-term survival is at stake, we have a basic responsibility to our species to venture to other worlds.

We should not have assumed that a political space station could be built.

Building one space station for everyone was and is insane: we should have built a dozen.