It’s not that I’m so smart, it’s just that I stay with problems longer – Albert Einstein.

The true sign of intelligence is not knowledge but imagination – Albert Einstein.

We should take care not to make the intellect our god; it has, of course, powerful muscles, but no personality – Albert Einstein.

It has yet to be proven that intelligence has any survival value – Arthur C. Clarke.

A great many people think that polysyllables are a sign of intelligence – Barbara Walters.

The difference between intelligence and education is this: intelligence will make you a good living – Charles F. Kettering.

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

If the human brain were so simple that we could understand it, we would be so simple that we couldn’t – Emerson M. Pugh.

One man that has a mind and knows it can always beat ten men who haven’t and don’t – George Bernard Shaw.

I would like to take you seriously, but to do so would be an affront to your intelligence – George Bernard Shaw.

Perhaps imagination is only intelligence having fun – George Scialabra.

There is no such thing as an underestimate of average intelligence – Henry Adams.

Man becomes man only by his intelligence, but he is man only by his heart – Henri Frederic Amiel.

Truly great madness cannot be achieved without significant intelligence – Henrik Tikkanen.

Some people take more care to hide their wisdom than their folly – Jonathan Swift.

Play is the only way the highest intelligence of humankind can unfold – Joseph Chilton Pearce.

Action is the real measure of intelligence – Napoleon Hill.

Character is higher than intellect – Ralph Waldo Emerson.

Beware when the great God lets loose a thinker on this planet – Ralph Waldo Emerson.

We lie in the lap of immense intelligence – Ralph Waldo Emerson.

Intelligence without ambition is a bird without wings – Salvador Dali.

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

Intelligence must follow faith, never precede it, and never destroy it – Thomas Kempis.

Clear thinking requires courage rather than intelligence – Thomas S. Szasz.

Common sense is not so common – Voltaire.

I won’t insult your intelligence by suggesting that you really believe what you just said – William F. Buckley, Jr.

We should not only use the brains we have, but all that we can borrow – Woodrow Wilson.