It is not enough that you should understand about applied science
in order that your work may increase man's blessings.
Concern for man himself and his fate must always
form the chief interest of all technical endeavors,
concern for the great unsolved problems 
of the organization of labor and the distribution of goods 
in order that the creations of our mind shall be a blessing and not a curse to mankind.   
Never forget this in the midst of your diagrams and equations.

                                                                                                           - Address to the student body.  California Institute of Technology

  When you sit with a nice girl for two hours you think it's only a minute. But when you sit on a hot stove for a minute you think it's two hours. That's relativity.

                 - From The New Your Times, April 19, 1955

If I give you a penny, you will be one penny richer and I'll be one penny poorer. But if I give you an idea, you will have a new idea, but I shall still have it, too.

 

“Innovation is not the product of logical thought, although the result is tied to logical structure.”