““Take, e. g., that of "a man who, on presenting a leaden coin, receives, by the king's command, a hundred pounds; not as though the leaden coin, by any operation of its own, caused him to be given that sum of money, this being the effect of the mere will of the king/' St. Thomas, who cites this example, justly ob serves: "If we examine the question properly, we shall see that according to the above mode the Sacraments are mere signs; for the leaden coin is nothing but a sign of the king's command that this man should receive money.'' (S. Th., 3a, qu. 62, art. i.) If the simile is really to il lustrate the causality of the Sacraments, it must be changed as follows: Man, in the Sacrament which he receives, presents a gold coin, which, on account of its intrinsic value, morally com pels his sovereign to be liberal.””