Treaties of commerce have been found by experience to be among the most effective instruments for promoting peace and harmony between nations whose interests, exclusively considered on either side, are brought into frequent collisions by competition. In framing such treaties it is the duty of each party not simply to urge with unyielding pertinacity that which suits its own interest, but to concede liberally to that which is adapted to the interest of the other. To accomplish this, little more is generally required than a simple observance of the rule of reciprocity, and were it possible for the states- men of 1 nation by stratagem and management to obtain from the weakness or ignorance of another an over-reaching treaty, such a compact would prove an incentive to war rather than a bond of peace.