[Sidenote: Pecuniary necessities of Rome.] This was the state of affairs at the commencement of the quarrel between Philip and Boniface. The Crusades had brought all Europe under taxation to Rome, and loud complaints were everywhere made against the drain of money into Italy. Things had at last come to such a condition that it was not possible to continue the Crusades without resorting to a taxation of the clergy, and this was the true reason of the eventual lukewarmness, and even opposition to them. But the stream of money that had thus been passing into Italy had engendered habits of luxury and extravagance. Cost what it might, money must be had in Rome. The perennial necessity under which the kings of England and France found themselves--the necessity of revenue for the carrying out of their temporal projects--could only be satisfied in the same way. The wealth of those nations had insensibly glided into the hands of the Church. [Sidenote: The King of England compels the clergy to pay taxes.] In England, Edward I. enforced the taxation of the clergy. They resisted at first, but that sovereign found an ingenious and effectual remedy. He directed his judges to hear no cause in which an ecclesiastic was a complainant, but to try every suit brought against them; asserting that those who refused to share the burdens of the state had no right to the protection of its laws. They forthwith submitted. In the nature and efficacy of this remedy we for the first time recognize the agency of a class of men soon to rise to power--the lawyers.