Since the branch of philosophy on which we are at present engaged differs from the others in not being a subject of merely intellectual interest — I mean we are not concerned to know what goodness essentially is, but how we are to become good men, for this alone gives the study its practical value — we must apply our minds to the solution of the problems of conduct.

Virtue is the golden mean between two vices, the one of excess and the other of deficiency.

There are two distinctive peculiarities by reference to which we characterize the soul (1) local movement and (2) thinking, discriminating, and perceiving. Thinking both speculative and practical is regarded as akin to a form of perceiving; for in the one as well as the other the soul discriminates and is cognizant of something which is.

The greatest injustices proceed from those who pursue excess, not by those who are driven by necessity.

Happiness is an expression of the soul in considered actions.

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

Learning is not child's play; we cannot learn without pain.