Now I shall discuss the best way to invest money: whether it should be all in cash or all in real estate and communal bonds, or some in one and some in the other. Now it is true that money is very difficult to conserve and to handle; it is very susceptible to the whims of fortune, and few khow how to manage it But whoever possesses a lot of money and knows how to manage it is, as they say, the master of the business community because he is the nerve center of all the trades and commercial activities. For in every moment of adverse fortune, in times of exile and those disasters which occur in the world, those with money will suffer less than those who are well...