XIV. Moral Educative Principles and their Transition to Practice

At this stage it must be remembered that man has an instinct for gain, for profiteering, for the principle of discount, etc., which appeals to the instincts. But we must be sure to impose the power of discernment very forcibly upon this, and consequently we must use this stage of development for studying the relations existing between calculation and the circulation of commodities and finance, that is, for doing percentage sums, interest sums, discount sums, etc.