I don’t want to involve myself in an endless topic of debate by discussing the treatment of slave, towards whom we Romans are exceptionally arrogant, harsh and insulting. The the essence of the advice I’d like to give is this great your inferiors in the way in which you would like to be treated by you own superiors. And whenever it strikes you how much power you have over your slave, let it also strike you that your own master has just as much power over you.
~ Seneca (Letters From A Stoic, XLVII)
While we no longer have slaves, there is bound to be a time where we are dealing with someone who in on a lower level on the hierarchical ladder than we are, this advice from Seneca is still relevant today.
It also goes along with the Golden Rule of treating others the way we would like to be treated ourselves.
How different would life be if those in a position of responsibility held this as one of those unbreakable rules?