“The possible redemption from the predicament of irreversibility──of being unable to undo what one has done──is the faculty of forgiving. The remedy for unpredictability, for the chaotic uncertainty of the future, is contained in the faculty to make and keep promises. Both faculties depend upon plurality, on the presence and acting of others, for no man can forgive himself and no one can be bound by a promise made only to himself.”

“Most of our faculties lie dormant because they can rely upon Habit, which knows what there is to be done and has no need of their services.”

“He who lets the world, or his own portion of it, choose his plan of life for him, has no need of any other faculty than the ape-like one of imitation. He who chooses his plan for himself, employs all his faculties.”

“...Chillingworth was a striking evidence of man's faculty of transforming himself into a devil, if he will only, for a reasonable space of time, undertake a devil's office.”

“What makes old age hard to bear is not the failing of one's faculties, mental and physical, but the burden of one's memories.”

“There is no compulsion for man to accept the truth. But it is certainly a shame upon the human intellect when man is not even interested in finding out as to what is the truth! Islam teaches that God has given man the faculty of reason and therefore expects man to reason things out objectively and systematically for himself. To reflect and to question and to reflect.”