John Chrysostom, a fifth century writer on slavery. Can be said about capitalism as well.

"Social arrangements, like all laws made by sinners, acknowledge these class distinctions [between master and slave]. But we are all called to accountability before the law of the same Lord and Master of all. We are called to work goodness toward all alike and to dispense the same fair rights to all. God's law does not recognize any of these class distinctions...." (continued)

John Chrysostom on slavery, same could be said about capitalism:

"... If anyone would ask where slavery comes from and why it has stolen into human life -- for I know that many are keen to ask such things and desire to learn -- I shall tell you. It is avarice that brought about slavery. It is acquisitiveness which is insatiable. This is not the original human condition. Remember that Noah had no slave, nor Abel nor Seth nor those after them. This horrid thing was begotten by sin. It does not come from our earliest ancestors. We pay our ancestors no respect by blaming them. We have insulted nature by this system."