I Admired Bohr Very Much.

It Is More Important To Have Beauty In One's Equations Than To Have Them Fit Experiment... It Seems That If One Is Working From The Point Of View Of Getting Beauty In One's Equations, And If One Has Really A Sound Insight, One Is On A Sure Line Of Progress. If There Is Not Complete Agreement Between The Results Of One's Work And Experiment, One Should Not Allow Oneself To Be Too Discouraged, Because The Discrepancy May Well Be Due To Minor Features That Are Not Properly Taken Into Account And That Will Get Cleared Up With Further Developments Of The Theory.

Just By Studying Mathematics We Can Hope To Make A Guess At The Kind Of Mathematics That Will Come Into The Physics Of The Future... If Someone Can Hit On The Right Lines Along Which To Make This Development, It May Lead To A Future Advance In Which People Will First Discover The Equations And Then, After Examining Them, Gradually Learn How To Apply Them... My Own Belief Is That This Is A More Likely Line Of Progress Than Trying To Guess At Physical Pictures.

A Physical Law Must Possess Mathematical Beauty.

Mathematics Is The Tool Specially Suited For Dealing With Abstract Concepts Of Any Kind And There Is No Limit To Its Power In This Field.

I Admired Bohr Very Much. We Had Long Talks Together, Long Talks In Which Bohr Did Practically All The Talking.