We ought to call ourselves Homo clamorans. Noisemaking man.

A citizen of the Roman Empire, for example, would have placed less value on individual liberty in the modern Western sense than on collective responsibility.

The Long Earth is bountiful but not forgiving.

The past is a distraction, a source of envy, enmity, bitterness. Only the present matters, for only in the present can we shape the future. Cut loose the past; it is dead weight. Let the Extirpation continue. Let it never end.

Authority. The antithesis of science.

When you get close enough to someone you're never really alone again.

When you realize that you are an eternal being, you will laugh at things that used to give you anxiety attacks.