Every Sentence I Utter Must Be Understood

Prediction Is Difficult, Especially The Future.

A Physicist Visits A Colleague And Notices A Horseshoe Hanging On The Wall Above The Entrance. 'do You Really Believe That A Horseshoe Brings Luck?' He Asks. 'no,' Replies The Colleague, 'but I've Been Told That It Works Even If You Don't Believe In It.'

Anybody Who Is Not Shocked By This Subject Has Failed To Understand It. [of Quantum Mechanics]

Anyone Who Can Contemplate Quantum Mechanics Without Getting Dizzy Hasn't Understood It.

The Old Saying Of The Two Kinds Of Truth. To The One Kind Belongs Statements So Simple And Clear That The Opposite Assertion Obviously Could Not Be Defended. The Other Kind, The So-called 'deep Truths', Are Statements In Which The Opposite Also Contains Deep Truth.