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A Great Deal Of My Work Is Just Playing With Equations And Seeing What They Give.

No. I Had Successfully Solved The Difficulty Of Finding A Description Of The Electron Which Was Consistent With Both Relativity And Quantum Mechanics. Of Course, When You Solve One Difficulty, Other New Difficulties Arise. You Then Try To Sove Them. You Can Never Solve All Difficulties At Once.

I Do Not See How A Man Can Work On The Frontiers Of Physics And Write Poetry At The Same Time. They Are In Opposition.

The Research Worker, In His Efforts To Express The Fundamental Laws Of Nature In Mathematical Form, Should Strive Mainly For Mathematical Beauty. He Should Take Simplicity Into Consideration In A Subordinate Way To Beauty ... It Often Happens That The Requirements Of Simplicity And Beauty Are The Same, But Where They Clash, The Latter Must Take Precedence.

Scientific Progress Is Measured In Units Of Courage, Not Intelligence.