The wise man avoids evil by anticipating it.
There can be no such thing as a necessary evil. For, if a thing is really necessary, it cannot be an evil and if it is an evil, it is not necessary.
There is only one way to put an end to evil, and that is to do good for evil.
Real evils can be either cured or endured; it is only imaginary evils that make people anxiety-ridden for a lifetime.
A good end cannot sanctify evil means, nor must we ever do evil that good may come of it.
It is not noble to return evil for evil, at no time ought we to do an injury to our neighbors.
Fret not thyself because of evildoers, neither be thou envious against the workers of iniquity. For they shall soon be cut down like the grass, and wither as the green herb.
It is the law of our humanity that man must know good through evil. No great principle ever triumphed but through much evil. No man ever progressed to greatness and goodness but through great mistakes.
There is evil in the world, but it can be overcome through repentance and aspiration, and therein lies the true meaning and adventure of life.
Never let a man imagine that he can pursue a good end by evil means, without sinning against his own soul. The evil effect on himself is certain.