Everything Is Made Of Atoms.

To Guess What To Keep And What To Throw Away Takes Considerable Skill. Actually It Is Probably Merely A Matter Of Luck, But It Looks As If It Takes Considerable Skill.

If You Can't Explain Something To A First Year Student, Then You Haven't Really Understood .

There's Plenty Of Room At The Bottom.

In Those Days, In Far Rockaway, There Was A Youth Center For Jewish Kids At The Temple.... Somebody Nominated Me For President Of The Youth Center. The Elders Began Getting Nervous, Because I Was An Avowed Atheist By That Time.... I Thought Nature Itself Was So Interesting That I Didn't Want It Distorted Like That. And So I Gradually Came To Disbelieve The Whole Religion.

You Have No Responsibility To Live Up To What Other People Think You Ought To Accomplish. I Have No Responsibility To Be Like They Expect Me To Be. It's Their Mistake, Not My Failing.