To Be Adult Is To Be Alone.

A Few Great Minds Are Enough To Endow Humanity With Monstrous Power, But A Few Great Hearts Are Not Enough To Make Us Worthy Of Using It.

The Ideal, Without Doubt, Varies, But Its Enemies, Alas, Are Always The Same.

Nothing Leads The Scientist So Astray As A Premature Truth.

My Pessimism Extends To The Point Of Even Suspecting The Sincerity Of Other Pessimists.

We Spend Our Time Envying People Whom We Wouldn't Wish To Be.