'If you hear no evil, see no evil, and think no evil, then chances are you'll never write a best-selling novel! '
(Though humourous, unfortunately there's too much truth in that. Probably why I stick to writing poetry. My aim is not become rich, just to pass along goodness and encouragement to make the world a brighter, more unified place!)
He fashions evil for himself who does evil to another, and an evil plan does mischief to the planner.
(Hesiod (c. 8th century B.C.), Greek didactic poet. Works and Days, 265.)