Sirach 22:16LXX

14Talk not much with a fool, and go not with him that hath no sense.

15Keep thyself from him, that thou mayst not have trouble, and thou shalt not be defiled with his sin.

16Turn away from him, and thou shalt find rest, and shalt not be wearied out with his folly.

17What is heavier than lead? and what other name hath he but fool?

18Sand and salt, and a mass of iron is easier to bear, than a man without sense, that is both foolish and wicked.