"good ever fortifies its own nature, while evil undermines itself by the ceaseless warfare between its own parts. In the unification of one good with another, the power of good is accordingly magnified. When one evil comes in contact with another evil, in the ensuing struggle each evil destroys the effectiveness of the other. In this way it becomes apparent that good, possessing the virtue of unity, must ever increase until it includes everything within its own nature; while evil, in which the principle of diversity is inherent, will ultimately destroy itself by the continual controversy between its parts. It has been well said that two evils do not make one good, but attacking each other achieve their mutual destruction, and by self-elimination thus prepare the way for the irresistible progress of good."
-Manly P. Hall