Every Word Or Concept, Clear As It

The Physicist May Be Satisfied When He Has The Mathematical Scheme And Knows How To Use For The Interpretation Of The Experiments. But He Has To Speak About His Results Also To Non-physicists Who Will Not Be Satisfied Unless Some Explanation Is Given In Plain Language. Even For The Physicist The Description In Plain Language Will Be The Criterion Of The Degree Of Understanding That Has Been Reached.

Nature Is Made In Such A Way As To Be Able To Be Understood. Or Perhaps I Should Put It-more Correctly-the Other Way Around, And Say That We Are Made In Such A Way As To Be Able To Understand Nature.

If Nature Leads Us To Mathematical Forms Of Great Simplicity And Beauty - By Forms I Am Referring To Coherent Systems Of Hypothesis, Axioms, Etc. - To Forms That No One Has Previously Encountered, We Cannot Help Thinking That They Are "true," That They Reveal A Genuine Feature Of Nature... You Must Have Felt This Too: The Almost Frightening Simplicity And Wholeness Of Relationships Which Nature Suddenly Spreads Out Before Us And For Which None Of Us Was In The Least Prepared.

The Solution Of The Difficulty Is That The Two Mental Pictures Which Experiment Lead Us To Form - The One Of The Particles, The Other Of The Waves - Are Both Incomplete And Have Only The Validity Of Analogies Which Are Accurate Only In Limiting Cases.

The Conception Of Objective Reality ... Has Thus Evaporated ... Into The Transparent Clarity Of Mathematics That Represents No Longer The Behavior Of Particles But Rather Our Knowledge Of This Behavior.