Exchange value forms the substance of money, and exchange value is wealth.

Each piece of money is a mere coin, or means of circulation, only so long as it actually circulates.

Although gold and silver are not by nature money, money is by nature gold and silver.

Money is therefore not only the object but also the fountainhead of greed.

Money plays the largest part in determining the course of history.

The writer must earn money in order to be able to live and to write, but he must by no means live and write for the purpose of making money.