There is a fundamental incompatibility - if not mutual revulsion - that divides our politics and its focus has fittingly become a debate over a wall.

Liberals claim to want to give a hearing to other views, but then are shocked and offended to discover that there are other views.

• William F. Buckley

Conservatism is the blind and fear-filled worship of dead radicals.

• Mark Twain

You have no respect for excessive authority or obsolete traditions. You're dangerous and depraved, and you ought to be taken outside and shot!

• Joseph Heller, Catch-22