Unto whom much is given, of him shall much be required
A man moved to one of the western U.S. areas and soon noticed that there were beautiful trout in the stream that crossed the property he had recently bought.
He decided that he would place mesh screens across the streams at both the upper and lower boundaries of his property to make sure that he would have fish for his own use and that they would not move away to other areas.
But trout go upstream to spawn.
Thus, none could enter his stream because of his fences.
His decision to keep his fish fenced in resulted in fewer and fewer fish until he had none.
By deliberate act or by ignorance, selfishness fences us in so that we harm ourselves, and break a moral law of the universe, namely: "Give and it shall be given unto you."