Karl Popper on debate

We must plan for freedom, and not only for security, if for no other reason than that only freedom can make security secure.

The game of science is, in principle, without end. He who decides one day that scientific statements do not call for any further test, and that they can be regarded as finally verified, retires from the game.

Scientists try to eliminate their false theories, they try to let them die in their stead. The believer⁠—whether animal or man⁠—perishes with his false beliefs.

A great many of those who ‘debunk’ traditional…values have in the background values of their own which they believe to be immune from the debunking process.

C. S. Lewis1898–1963The Abolition of Man

I argue very well. Ask any of my remaining friends. I can win an argument on any topic, against any opponent. People know this, and steer clear of me at parties. Often, as a sign of their great respect, they don’t even invite me.

Dave Barryborn 1947

I always cheer up immensely if an attack is particularly wounding because I think, well, if they attack one personally, it means they have not a single political argument left.

Margaret Thatcher1925–2013From an interview for Italian television (RAI) (10 March 1986)