A Very Great Deal More

Energy Is A Very Subtle Concept. It Is Very, Very Difficult To Get Right.

John Von Neumann Gave Me An Interesting Idea: That You Don't Have To Be Responsible For The World That You're In. So I Have Developed A Very Powerful Sense Of Social Irresponsibility As A Result Of Von Neumann's Advice. It's Made Me A Very Happy Man Ever Since. But It Was Von Neumann Who Put The Seed In That Grew Into My Active Irresponsibility!

Strange! I Don't Understand How It Is That We Can Write Mathematical Expressions And Calculate What The Thing Is Going To Do Without Being Able To Picture It.

The Most Important Thing I Found Out From My Father Is That If You Asked Any Question And Pursued It Deeply Enough, Then At The End There Was A Glorious Discovery Of A General And Beautiful Kind.

When It Came Time For Me To Give My Talk On The Subject, I Started Off By Drawing An Outline Of The Cat And Began To Name The Various Muscles. The Other Students In The Class Interrupt Me: "we *know* All That!" "oh," I Say, "you *do*? Then No *wonder* I Can Catch Up With You So Fast After You've Had Four Years Of Biology." They Had Wasted All Their Time Memorizing Stuff Like That, When It Could Be Looked Up In Fifteen Minutes.