Good can exist without evil, whereas evil cannot exist without good.

Man cannot live without joy; therefore when he is deprived of true spiritual joys it is necessary that he become addicted to carnal pleasures.

Good can exist without evil, whereas evil cannot exist without good....

Three conditions are necessary for Penance: contrition, which is sorrow for sin, together with a purpose of amendment; confession of sins without any omission; and satisfaction by means of good works.

Inside each of us, there is the seed of both good and evil. It's a constant struggle as to which one will win. And one cannot exist without the other.

To one who has faith, no explanation is necessary. To one without faith, no explanation is possible.