All intelligent thoughts have already been thought what is necessary is only to try to think them again. Johann Wolfgang von Goethe on intelligence
The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function. F. Scott Fitzgerald on intelligence
When a true genius appears, you can know him by this sign: that all the dunces are in a confederacy against him. Jonathan Swift on intelligence
Wit is educated insolence. Aristotle on intelligence
An intellectual is someone whose mind watches itself. Albert Camus on intelligence
Intelligence is the wife, imagination is the mistress, memory is the servant. Victor Hugo on intelligence
There is no great genius without a mixture of madness. Aristotle on intelligence
Genius always finds itself a century too early. Ralph Waldo Emerson on intelligence
A woman uses her intelligence to find reasons to support her intuition. Gilbert K. Chesterton on intelligence
Be what you are. This is the first step toward becoming better than you are. Julius Charles Hare on intelligence
It takes a lot of things to prove you are smart, but only one thing to prove you are ignorant. Don Herold on intelligence
Genius is the ability to renew one's emotions in daily experience. Paul Cezanne on intelligence
It is the mark of a truly intelligent person to be moved by statistics. George Bernard Shaw on intelligence
Small minds are concerned with the extraordinary, great minds with the ordinary. Blaise Pascal on intelligence
I'm not the smartest fellow in the world, but I can sure pick smart colleagues. Franklin D. Roosevelt on intelligence
The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us. Bill Watterson on intelligence
I'm an optimist in the sense that I believe humans are noble and honorable, and some of them are really smart. I have a very optimistic view of individuals. Steve Jobs on intelligence
We have now sunk to a depth at which restatement of the obvious is the first duty of intelligent men. George Orwell on intelligence
The mind is not a vessel to be filled but a fire to be kindled. Plutarch on intelligence
Knowledge is love and light and vision. Helen Keller on intelligence