“Before I go on with this short history, let me make a general observation– the test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.One should, for example, be able to see that things are hopeless and yet be determined to make them otherwise. This philosophy fitted on to my early adult life, when I saw the improbable, the implausible, often the "impossible," come true.”

“The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.”

“One should . . . be able to see things as hopeless and yet be determined to make them otherwise.”

“An artist is someone who can hold two opposing viewpoints and still remain fully functional.”

“Dear, don't think of getting out of bed yet. I've always suspected that early rising in early life makes one nervous.”

“Once in a while I go off on a spree and make a fool of myself, but I always come back, and in my heart I love her all the time.”

“Genius is the ability to put into effect what is on your mind.”