If You Cannot Explain It Simply, You

You Do Not Really Understand Something Unless You Can Explain It To Your Grandmother.

The Measure Of Intelligence Is The Ability To Change.

Almost All The Other Fellows Do Not Look From The Facts To The Theory But From The Theory To The Facts; They Cannot Get Out Of The Network Of Already Accepted Concepts; Instead, Comically, They Only Wriggle About Inside.

The Wonder Of Nature Does Not Become Smaller Because One Cannot Measure It By The Standards Of Human Moral And Human Aims.

Work Is The Only Thing That Gives Substance To Life.