I Admired Bohr Very Much. We Had

It Is Quite Clear That Beauty Does Depend On One's Culture And Upbringing For Certain Kinds Of Beauty, Pictures, Literature, Poetry And So On...but Mathematical Beauty Is Of A Rather Different Kind. I Should Say Perhaps It Is Of A Completely Different Kind And Transcends These Personal Factors. It Is The Same In All Countries And At All Periods Of Time.

A Termination Of One's Life Is Necessary In The Scheme Of Things To Provide A Logical Reason For Unselfishness. . . . The Fact That There Is An End To One's Life Compels One To Take An Interest In Things That Will Continue To Live After One Is Dead.

One Could Perhaps Describe The Situation By Saying That God Is A Mathematician Of A Very High Order, And He Used Very Advanced Mathematics In Constructing The Universe.

It Was Not Until Some Weeks Later That I Realized There Is No Need To Restrict Oneself To 2 By 2 Matrices. One Could Go On To 4 By 4 Matrices, And The Problem Is Then Easily Soluable. In Retrospect, It Seems Strange That One Can Be So Much Held Up Over Such An Elementary Point. The Resulting Wave Equation For The Electron Turned Out To Be Very Successful. It Led To Correct Values For The Spin And The Magnetic Moment. This Was Quite Unexpected. The Work All Followed From A Study Of Pretty Mathematics, Without Any Thought Being Given To These Physical Properties Of The Electron.

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