Possession properly has two faces, two aspects: we all have a right to private property, but this is accompanied by our responsibility for its righteous use. These two things (which should be inseparable) are frequently divided today. Everyone admits that the farmer who own a horse is obligated to feed and care for it, but in the case of stocks and bonds, we often forget that the same principle should prevail.
On Being Human: Reflections on Life and Living (ed. Doubleday Books, 1982)