Physics Is Much Too Hard For Physicists.

He Who Seeks For Methods Without Having A Definite Problem In Mind Seeks In The Most Part In Vain.

How Thoroughly It Is Ingrained In Mathematical Science That Every Real Advance Goes Hand In Hand With The Invention Of Sharper Tools And Simpler Methods Which, At The Same Time, Assist In Understanding Earlier Theories And In Casting Aside Some More Complicated Developments.

Before Beginning [to Try To Prove Fermat's Last Theorem] I Should Have To Put In Three Years Of Intensive Study, And I Haven't That Much Time To Squander On A Probable Failure.

Every Kind Of Science, If It Has Only Reached A Certain Degree Of Maturity, Automatically Becomes A Part Of Mathematics.

Galileo Was No Idiot. Only An Idiot Could Believe That Science Requires Martyrdom - That May Be Necessary In Religion, But In Time A Scientific Result Will Establish Itself.