Intelligence is based on how efficient a species became at doing the things they need to survive.

Intelligence plus character - that is the goal of true education.

Silence is the only answer you should give to the fools. Where ignorance speaks, intelligence should not give advices.

Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.

If men can develop weapons that are so terrifying as to make the thought of global war include almost a sentence for suicide, you would think that man's intelligence and his comprehension... would include also his ability to find a peaceful solution.

There is nothing wrong with America that faith, love of freedom, intelligence, and energy of her citizens cannot cure.