You Cannot Have A Rational

Why Do I Think That We, The Intellectuals, Are Able To Help? Simply Because We, The Intellectuals, Have Done The Most Terrible Harm For Thousands Of Years. Mass Murder In The Name Of An Idea, A Doctrine, A Theory, A Religion - That Is All "our" Doing, "our" Invention: The Invention Of The Intellectuals. If Only We Would Stop Setting Man Against Man - Often With The Best Intentions - Much Would Be Gained. Nobody Can Say That It Is Impossible For Us To Stop Doing This.

A Theory Which Is Not Refutable By Any Conceivable Event Is Non-scientific. Irrefutability Is Not A Virtue Of A Theory (as People Often Think) But A Vice.

Is The World Ruled By Strict Laws Or Not? This Question I Regard As Metaphysical. The Laws We Find Are Always Hypotheses; Which Means That They May Always Be Superseded, And That They May Possibly Be Deduced From Probability Estimates. Yet Denying Causality Would Be The Same As Attempting To Persuade The Theorist To Give Up His Search; And That Such An Attempt Cannot Be Backed By Anything Like A Proof.

Propose Theories Which Can Be Criticized. Think About Possible Decisive Falsifying Experiments-crucial Experiments. But Do Not Give Up Your Theories Too Easily-not, At Any Rate, Before You Have Critically Examined Your Criticism.

If You Can't Say It Simply And Clearly, Keep Quiet, And Keep Working On It Till You Can.