Mankind have a great aversion to intellectual labor; but even supposing knowledge to be easily attainable, more people would be content to be ignorant than would take even a little trouble to acquire it.
Some people think only intellect counts: knowing how to solve problems, knowing how to get by, knowing how to identify an advantage and seize it. But the functions of intellect are insufficient without courage, love, friendship, compassion and empathy.
I could never think well of a man's intellectual or moral character, if he was habitually unfaithful to his appointments.
It would only take one generation of forgetfulness to put us back intellectually several hundred years.
We should take care not to make the intellect our god; it has, of course, powerful muscles, but no personality.
If you would persuade, you must appeal to interest rather than intellect.
The Argument from Intimidation is a confession of intellectual impotence.
One has a greater sense of intellectual degradation after an interview with a doctor than from any human experience.
God has placed no limits to the exercise of the intellect he has given us, on this side of the grave.
Science would be ruined if (like sports) it were to put competition above everything else, and if it were to clarify the rules of competition by withdrawing entirely into narrowly defined specialties. The rare scholars who are nomads-by-choice are essential to the intellectual welfare of the settled disciplines.