I've had a lot of bosses who could stand to follow today's stoic quote. Those bosses are a large part of the reason that I am interested in stoic philosophy.
"What you shun enduring yourself, attempt not to impose on others. You shun slavery - beware enslaving others. If you can endure to do that, one would think that you had been once upon a time a slave yourself. For vice has nothing in common with virtue, nor freedom with slavery." - Epictetus (born a slave, disabled, and later banished from Rome along with all philosophers by emperor Domitian)