Thinking Is Hard Work; That's

Do Not Grow Old, No Matter How Long You Live. Never Cease To Stand Like Curious Children Before The Great Mystery Into Which We Were Born.

It Is Only To The Individual That A Soul Is Given.

The Most Important Tool Of The Theoretical Physicist Is His Wastebasket.

Never Memorize Something That You Can Look Up.

A Conviction Akin To Religious Feeling Of The Rationality Or Intelligibility Of The World Lies Behind All Scientific Work Of A High Order.