The 'path' Comes Into Existence Only When

Every Word Or Concept, Clear As It May Seem To Be, Has Only A Limited Range Of Applicability.

Whenever We Proceed From The Known To The Unkown We May Hope To Understand, But We May Have To Learn At The Same Time A New Meaning Of The Word 'understanding'

Many People Will Tell You That An Expert Is Someone Who Knows A Great Deal About The Subject. To This I Would Object That One Can Never Know Much About Any Subject. I Would Much Prefer The Following Definition: An Expert Is Someone Who Knows Some Of The Worst Mistakes That Can Be Made In The Subject, And How To Avoid Them.

The One Who Insists On Never Uttering An Error Must Remain Silent.

Even For The Physicist The Description In Plain Language Will Be A Criterion Of The Degree Of Understanding That Has Been Reached.