A true friend is one soul in two bodies – Aristotle

A friend to all is a friend to none – Aristotle

What it lies in our power to do, it lies in our power not to do – Aristotle

Friendship is a single soul dwelling in two bodies – Aristotle

Quality is not an act, it is a habit – 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