Genius is 1% talent and 99% percent hard work.

Heroism on command, senseless violence, and all the loathsome nonsense that goes by the name of patriotism - how passionately I hate them!

It is an outcome of faith that nature-as she is perceptible to our five senses-takes the character of such a well formulated puzzle.

Scientists believe that every occurrence, including the affairs of human beings, is due to the laws of nature. Therefore a scientist cannot be inclined to believe that the course of events can be influenced by prayer, that is, by a supernaturally manifested wish.

The most important tool of the theoretical physicist is his wastebasket.

Subtle is the Lord. Malicious, He is not.

This has been done elegantly by Minkowski; but chalk is cheaper than grey matter, and we will do it as it comes.