“Behold thy lean purse is fattening. Thou hast disciplined thyself to leave therein one-tenth of all thou earneth. Thou hast controlled thy expenditures to protect thy growing treasure. Next, we will consider means to put thy treasure to labor and to increase. Gold in a purse is gratifying to own and satisfieth a miserly soul but earns nothing. The gold we may retain from our earnings is but the start. The earnings it will make shall build our fortunes.” So spoke Arkad upon the third day to his class.