Consider how an ear of corn is produced. Most of us would point to the labor of the farmer in tilling the soil, sowing the seed, and harvesting the grain. But it is not as simple as that. The farmer needs the blacksmith to make the spade, ploughshare, sickle and axe. He needs the carpenter to make a frame from the plough and to make a yoke for the horse. He needs the leather worker to make the harness. He needs the builder to make a stable for the horse, and a barn to store the hay and grain. He needs a baker to turn the grain into bread, otherwise his labors are worthless. And he needs the forest worker to provide wood for the carpenter to saw, and wood for the baker to heat the oven. So just to produce corn many different people are needed. Since we depend on one another for our very survival, why do we ever try to exploit and cheat one another? Nothing could be more stupid and irrational than to try and get the better of someone else; people who cheat and exploit others are cheating and exploiting themselves.
—St. John Chrysostom, On Living Simply