I Owe As Much Of My Success

He Who Has Never Been Deceived By A Lie Does Not Know The Meaning Of Bliss.

If The Moon, In The Act Of Completing Its Eternal Way Around The Earth, Were Gifted With Self-consciousness, It Would Feel Thoroughly Convinced That It Was Traveling Its Way Of Its Own Accord On The Strength Of A Resolution Taken Once And For All. So Would A Being, Endowed With Higher Insight And More Perfect Intelligence, Watching Man And His Doings, Smile About Man's Illusion That He Was Acting According To His Own Free Will.

The Theoretical Idea ... Does Not Arise Apart From And Independent Of Experience; Nor Can It Be Derived From Experience By A Purely Logical Procedure. It Is Produced By A Creative Act. Once A Theoretical Idea Has Been Acquired, One Does Well To Hold Fast To It Until It Leads To An Untenable Conclusion.

The Theory Must Not Contradict Empirical Facts.

A Person Who Never Made A Mistake Never Tried Anything New.