A true friend is one soul in two bodies – Aristotle

Happiness depends upon ourselves – Aristotle

Education is an ornament in prosperity and a refuge in adversity – Aristotle

There is no great genius without a mixture of madness – Aristotle

The one exclusive sign of thorough knowledge is the power of teaching – 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