Christian Science commands man to master the propensities, — to hold hatred in abeyance with kindness, to conquer lust with chastity, revenge with charity, and to overcome deceit with honesty. Choke these errors in their early stages, if you would not cherish an army of conspirators against health, happiness, and success.
The only power of evil is to destroy itself. It can never destroy one iota of good. Every attempt of evil to destroy good is a failure, and only aids in peremptorily punishing the evil-doer. If we concede the same reality to discord as to harmony, discord has as lasting a claim upon us as has harmony.
(Science and Health with Key to the Scriptures by Mary Baker Eddy 186:19)