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

“All men by nature desire to 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.”

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

“All human actions have one or more of these seven causes: chance, nature, compulsion, habit, reason, passion, and desire.”

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

“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”