Never Accept A Fact Until

If Someone Points Out To You That Your Pet Theory Of The Universe Is In Disagreement With Maxwell's Equations - Then So Much The Worse For Maxwell's Equations. If It Is Found To Be Contradicted By Observation - Well, These Experimentalists Do Bungle Things Sometimes. But If Your Theory Is Found To Be Against The Second Law Of Thermodynamics I Can Give You No Hope; There Is Nothing For It But To Collapse In Deepest Humiliation.

The Word Reality Frightens Me.

Schrödinger's Wave-mechanics Is Not A Physical Theory, But A Dodge - And A Very Good Dodge Too.

On One Occasion When [william] Smart Found Him Engrossed With His Fundamental Theory, He Asked Eddington How Many People He Thought Would Understand What He Was Writing-after A Pause Came The Reply, 'perhaps Seven.'

You Cannot Disturb The Tiniest Petal Of A Flower Without The Troubling Of A Distant Star.