Historical analogy is the last refuge of people who can't grasp the current situation.

It would take 2,000 Vietnam Memorials to list the [Twentieth] century's war dead.

Below the 40th latitude there is no law; below the 50th no god; below the 60th no common sense and below the 70th no intelligence whatsoever.

You can never properly predict the future as it really turns out. So you are doing something a little different when you write science fiction. You are trying to take a different perspective on now.

We’ll all say that. We’ll all go on and make the place safe. Roads, cities. New sky, new soil. Until it’s all some kind of Siberia or Northwest Territories, and Mars will be gone and we’ll be here, and we’ll wonder why we feel so empty. Why when we look at the land we can never see anything but our own faces.

Very few people ever bother to find out what other people really think. They are willing to accept whatever they are told about anyone sufficiently distant.

You can't get any movement larger than five people without including at least one flippin idiot.