I not only use all the brains that I have, but all that I can borrow.       

                       —Woodrow Wilson

An intelligence test sometimes shows a man how smart he would have been not to have taken it.              —Laurence J. Peter

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.

 —F. Scott Fitzgerald

There is nobody so irritating as somebody with less intelligence and more sense than we have.

—Don Herold

To repeat what others have said, requires education; to challenge it, requires brains.

—Mary Pettibone Poole

A mind too active is no mind at all.               —Theodore Roethke

It is wiser to find out than to suppose.          —Mark Twain

I know that I am intelligent because I know that I know nothing.         —Socrates

The brain is a wonderful organ. It starts working the moment you get up in the morning and does not stop until you get into the office.                               —Robert Frost

There are painters who transform the sun to a yellow spot, but there are others who with the help of their art and their intelligence, transform a yellow spot into the sun.           

                            —Pablo Picasso

Like many intellectuals, he was incapable of saying a simple thing in a simple way.

—Marcel Proust

I’m not offended by all the dumb blonde jokes because I know I’m not dumb… and I also know I’m not blonde.    

                              —Dolly Parton

What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.      –Sigmund Freud

The bookful blockhead, ignorantly read / With loads of learned lumber in his hear.

–Alexander Pope

Intelligence is the ability to avoid doing work, yet getting the work done.           

                          —Linus Torvalds

The intellect is not a serious thing, and never has been. It is an instrument on which one plays, that is all.

—Oscar Wilde

Lord help me, I’m just not that bright.         – Homer Simpson