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.
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.
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.
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.
To wisdom belongs the intellectual apprehension of things eternal; to knowledge, the rational apprehension of things temporal.
An intellectual snob is someone who can listen to the William Tell Overture and not think of The Lone Ranger.
Mad, adj: Affected with a high degree of intellectual independence.
The fact that man knows right from wrong proves his intellectual superiority to other creatures; but the fact that he can do wrong proves his moral inferiority to any creature that cannot.