No Paradox, No Progress.

The Best Weapon Of A Dictatorship Is Secrecy, But The Best Weapon Of A Democracy Should Be The Weapon Of Openness.

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.

If Anybody Says He Can Think About Quantum Physics Without Getting Giddy, That Only Shows He Has Not Understood The First Thing About Them.

We Are All Agreed That Your Theory Is Crazy. The Question Which Divides Us Is Whether It Is Crazy Enough To Have A Chance Of Being Correct. My Own Feeling Is That It Is Not Crazy Enough.

In Our Description Of Nature The Purpose Is Not To Disclose The Real Essence Of The Phenomena But Only To Track Down, So Far As It Is Possible, Relations Between The Manifold Aspects Of Our Experience.