Self-will, as God says by the Prophet, is what spoils and corrupts our devotions, labors, and penances. Therefore, not to lose time and trouble, we must endeavor never to act from the impulse of nature, interest, inclination, temper, or caprice, but always from the pure and single motive of doing the will of God, and accustom ourselves to this in all things. This is the most effectual, nay rather the only means of arriving safely and quickly at union with God.----St. Vincent de Paul