of no value

References in classic literature ?
For which reason the art of money-getting seems to be chiefly conversant about trade, and the business of it to be able to tell where the greatest profits can be made, being the means of procuring abundance of wealth and possessions: and thus wealth is very often supposed to consist in the quantity of money which any one possesses, as this is the medium by which all trade is conducted and a fortune made, others again regard it as of no value, as being of none by nature, but arbitrarily made so by compact; so that if those who use it should alter their sentiments, it would be worth nothing, as being of no service for any necessary purpose.