Energy Is A Very Subtle Concept. It

Nature Isn't Classical, Dammit, And If You Want To Make A Simulation Of Nature, You'd Better Make It Quantum Mechanical, And By Golly It's A Wonderful Problem, Because It Doesn't Look So Easy.

I Don't Know What's The Matter With People: They Don't Learn By Understanding, They Learn By Some Other Way — By Rote Or Something. Their Knowledge Is So Fragile!

Nature's Imagination Far Surpasses Our Own.

There’s So Much Distance Between The Fundamental Rules And The Final Phenomenon, That It’s Almost Unbelievable That The Final Variety Of Phenomenon Can Come From Such A Steady Operation Of Such Simple Rules.

You Know How It Always Is, Every New Idea, It Takes A Generation Or Two Until It Becomes Obvious That There's No Real Problem. It Has Not Yet Become Obvious To Me That There's No Real Problem. I Cannot Define The Real Problem, Therefore I Suspect There's No Real Problem, But I'm Not Sure There's No Real Problem.