No Paradox, No Progress.

There Are Two Sorts Of Truth: Trivialities, Where Opposites Are Clearly Absurd, And Profound Truths, Recognised By The Fact That The Opposite Is Also A Profound Truth

It Is Wrong To Think That The Task Of Physics Is To Find Out How Nature Is. Physics Concerns What We Say About Nature.

In Physics We Deal With States Of Affairs Much Simpler Than Those Of Psychology And Yet We Again And Again Learn That Our Task Is Not To Investigate The Essence Of Things-we Do Not At All Know What This Would Mean&mash;but To Develop Those Concepts That Allow Us To Speak With Each Other About The Events Of Nature In A Fruitful Manner.

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.

The Present State Of Atomic Theory Is Characterized By The Fact That We Not Only Believe The Existence Of Atoms To Be Proved Beyond A Doubt, But Also We Even Believe That We Have An Intimate Knowledge Of The Constituents Of The Individual Atoms.