“Melancholy men, of all others, are the most witty.”

“Great men are always of a nature originally melancholy.”

“Therefore the activity of God, which surpasses all others in blessedness, must be contemplative; and of human activities, therefore, that which is most akin to this must be most of the nature of happiness”

“It is of the nature of desire not to be satisfied, and most men live only for the gratification of it.”

“Some men are just as sure of the truth of their opinions as are others of what they know.”

“Yes the truth is that men's ambition and their desire to make money are among the most frequent causes of deliberate acts of injustice.”

“The greatest virtues are those which are most useful to other persons.”