Emulation is pain caused by seeing the presence, in person whose nature is like our own, of good things that are highly valued and possible for ourselves to acquire; but it is felt, not because others have these goods, but because we have not got them ourselves. It is therefore a good feeling felt by good persons, whereas envy is a bad feeling felt by bad persons. Emulation makes us take steps to secure the good things in question, envy makes us take steps to stop our neighbor having them. <i>as related in Solomon Schimmel's The Seven Deadly Sins p 81</i>

source: Aristotle, Rhetoric, Book 2 Chapter 11 tags: Discipleship