Albert Barnes Commentary Ecclesiastes 10:4

"If the spirit of the ruler rise up against thee, leave not thy place; for gentleness allayeth great offences." — Ecclesiastes 10:4 (ASV)

If the spirit ... - that is, if he is angry.

Leave not thy place - that is, do not lose your self-control and quit his presence. Gentleness on your part will calm both yourself and him, and prevent great wrongs being committed by either.