One Could Perhaps Describe The Situation By

The Only Object Of Theoretical Physics Is To Calculate Results That Can Be Compared With Experiment... It Is Quite Unnecessary That Any Satisfactory Description Of The Whole Course Of The Phenomena Should Be Given.

Renormalization Is Just A Stop-gap Procedure. There Must Be Some Fundamental Change In Our Ideas, Probably A Change Just As Fundamental As The Passage From Bohr's Orbit Theory To Quantum Mechanics. When You Get A Number Turning Out To Be Infinite Which Ought To Be Finite, You Should Admit That There Is Something Wrong With Your Equations, And Not Hope That You Can Get A Good Theory Just By Doctoring Up That Number.

If There Is A God, He's A Great Mathematician.

There Is In My Opinion A Great Similarity Between The Problems Provided By The Mysterious Behavior Of The Atom And Those Provided By The Present Economic Paradoxes Confronting The World.

In Science One Tries To Tell People, In Such A Way As To Be Understood By Everyone, Something That No One Ever Knew Before. But In Poetry, It Is The Exact Opposite.