Jealousy is both reasonable and belongs to reasonable men, while envy is base and belongs to the base, for the one makes himself get good things by jealousy, while the other does not allow his neighbour to have them through envy – Aristotle

A true friend is one soul in two bodies – Aristotle

At his best, man is the noblest of all animals; separated from law and justice he is the worst – Aristotle

Whosoever is delighted in solitude is either a wild beast or a god – Aristotle

All men by nature desire knowledge – Aristotle

Every art and every inquiry, and similarly every action and choice, is thought to aim at some good; and for this reason the good has rightly been declared to be that at which all things aim – Aristotle