Kahlil Gibran, The Prophet

Your soul is oftentimes a battlefield, upon which your reason and your judgment wage war against your passion and your appetite. Would that I could be the peacemaker in your soul, that I might turn the discord and the rivalry of your elements into oneness and melody. But how shall I, unless you yourselves be also the peacemakers, nay, the lovers of all your elements? Reason, ruling alone, is a force confining; and passion, unattended, is a flame that burns to its own destruction. Therefore let your soul exalt your reason to the height of passion, that it may sing; and let it direct your passion with reason, that your passion may live through its own daily resurrection, and like the phoenix rise above its own ashes.
— Kahlil Gibran, The Prophet