If You Can Find Any Other View

To Test Whether You Have Learned An Idea Or A Definition, Rephrase What You Just Learned Without Using The New Word.

In Fact The Total Amount That A Physicist Knows Is Very Little. He Has Only To Remember The Rules To Get Him From One Place To Another And He Is All Right.

If You Think You Understand Quantum Mechanics, You Don't Understand Quantum Mechanics.

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

When A Scientist Doesn't Know The Answer To A Problem, He Is Ignorant. When He Has A Hunch As To What The Result Is, He Is Uncertain. And When He Is Pretty Darn Sure Of What The Result Is Going To Be, He Is Still In Some Doubt. We Have Found It Of Paramount Importance That In Order To Progress We Must Recognize Our Ignorance And Leave Room For Doubt. Scientific Knowledge Is A Body Of Statements Of Varying Degrees Of Certainty - Some Most Unsure, Some Nearly Sure, But None Absolutely Certain.