16
Do not fight with a wrathful man, and do not cross the wilderness with him; because blood is as nothing in his sight, and where no help is at hand, he will strike you down.
17
Do not consult with a fool, for he will not be able to keep a secret.
18
In the presence of a stranger do nothing that is to be kept secret, for you do not know what he will divulge.
19
Do not reveal your thoughts to every one, lest you drive away your good luck.