When evil persons harm those virtuous, it is like looking up to the sky and spitting. Their spittle does not reach the sky, returning to follow, on themselves falling. Against the wind tossing dust, the dust does not reach others, returning as dust on their own bodies. The virtuous cannot be destroyed, while misfortune will definitely destroy themselves.
— Śākyamuni Buddha
(Sūtra Of 42 Sections: 8th Section)