The truth in this sentiment is, of course, the evident one, that a man often only wakens to the value of a possession when he is in danger of losing it. The force of a current is sometimes only noted when it is opposed by an obstacle. Two persons may discover, by a temporary alienation, how much they really care for each other. It may be that previously they took things for granted. Their affection had lost its first glitter, and was accepted as a commonplace. Through some misunderstanding or dispute, they broke off their friendly relationship, feeling sure that they had come to an end of their regard. They could never again be on the same close terms; hot words had been spoken; taunts and reproaches had passed; eyes had flashed fire, and they parted in anger--only to learn that their love for each other was as real and as strong as ever. The very difference revealed the true union of hearts that had existed. They had been blind to the strength of their mutual regard, till it was so painfully brought to their notice. The love is renewed with a more tender sense of its sacredness, and a more profound feeling of its strength. The dissensions only displayed the union; the discord drove them to a fuller harmony. This is a natural and common experience. But a mistake may easily be made by confusing cause and effect. "The course of true love never did run smooth"--but the obstacles in the channel do not _produce_ the swiftness and the volume of the stream; they only _show_ them. There may be an unsuspected depth and force for the first time brought to light when the stream strikes a barrier, but the barrier is merely the occasion, not the cause, of the revelation. To mistake the one for the other, may lead to a false and stupid policy. Many, through this mistake, act as though dissension were of the very nature of affection, and as if the one must necessarily react on the other for good. Some foolish people will sometimes even produce disagreement for the supposed pleasure of agreeing once more, and quarrel for the sake of making it up again.