Those that know, do. Those that understand, teach – Aristotle

All human actions have one or more of these seven causes: chance, nature, compulsions, habit, reason, passion, desire – Aristotle

Friendship is a single soul dwelling in two bodies – 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

In all things of nature there is something of the marvelous – Aristotle

All men by nature desire knowledge – Aristotle