Only A Few Know, How Much One

By Getting To Smaller And Smaller Units, We Do Not Come To Fundamental Or Indivisible Units. But We Do Come To A Point Where Further Division Has No Meaning.

The Incomplete Knowledge Of A System Must Be An Essential Part Of Every Formulation In Quantum Theory. Quantum Theoretical Laws Must Be Of A Statistical Kind. To Give An Example: We Know That The Radium Atom Emits Alpha-radiation. Quantum Theory Can Give Us An Indication Of The Probability That The Alpha-particle Will Leave The Nucleus In Unit Time, But It Cannot Predict At What Precise Point In Time The Emission Will Occur, For This Is Uncertain In Principle.

The Positivists Have A Simple Solution: The World Must Be Divided Into That Which We Can Say Clearly And The Rest, Which We Had Better Pass Over In Silence. But Can Anyone Conceive Of A More Pointless Philosophy, Seeing That What We Can Say Clearly Amounts To Next To Nothing? If We Omitted All That Is Unclear, We Would Probably Be Left Completely Uninteresting And Trivial Tautologies.

Quantum Theory Provides Us With A Striking Illustration Of The Fact That We Can Fully Understand A Connection Though We Can Only Speak Of It In Images And Parables.

Both Matter And Radiation Possess A Remarkable Duality Of Character, As They Sometimes Exhibit The Properties Of Waves, At Other Times Those Of Particles. Now It Is Obvious That A Thing Cannot Be A Form Of Wave Motion And Composed Of Particles At The Same Time - The Two Concepts Are Too Different