What Is This Frog And Mouse Battle

On Quantum Theory I Use Up More Brain Grease (rough Translation Of German Idiom) Than On Relativity.

God May Be Subtle, But He Isn't Plain Mean.

The True Definition Of Madness Is Repeating The Same Action, Over And Over, Hoping For A Different Result.

My Pacifism Is Not Based On Any Intellectual Theory But On A Deep Antipathy To Every Form Of Cruelty And Hatred.

My Only Refuge, As A Serious Young Man, From The Despair Of My Financial Burden To My Family, Is That I Did Everything I Could To Never Permit Myself Any Amusements Or Diversions Except Those Afforded By My Studies.