If You Can't Say It Simply And

There Is An Almost Universal Tendency, Perhaps An Inborn Tendency, To Suspect The Good Faith Of A Man Who Holds Opinions That Differ From Our Own Opinions. It Obviously Endangers The Freedom And The Objectivity Of Our Discussion If We Attack A Person Instead Of Attacking An Opinion Or, More Precisely, A Theory.

There Can Be No Ultimate Statements Science: There Can Be No Statements In Science Which Can Not Be Tested, And Therefore None Which Cannot In Principle Be Refuted, By Falsifying Some Of The Conclusions Which Can Be Deduced From Them.

It Is Wrong To Think That Belief In Freedom Always Leads To Victory; We Must Always Be Prepared For It To Lead To Defeat. If We Choose Freedom, Then We Must Be Prepared To Perish Along With It.

The Survival Value Of Intelligence Is That It Allows Us To Extinct A Bad Idea, Before The Idea Extincts Us.

A Rationalist Is Simply Someone For Whom It Is More Important To Learn Than To Be Proved Right; Someone Who Is Willing To Learn From Others - Not By Simply Taking Over Another's Opinions, But By Gladly Allowing Others To Criticize His Ideas And By Gladly Criticizing The Ideas Of Others