Then I said to myself, “As is the fate of the fool, it will also befall me. Why then have I been extremely wise?” So I said to myself, “This too is vanity.”

Do not let your speech cause you to sin and do not say in the presence of the messenger of God that it was a mistake. Why should God be angry on account of your voice and destroy the work of your hands?

Do not say, “Why is it that the former days were better than these?”
For it is not from wisdom that you ask about this.

Do not be excessively righteous and do not be overly wise. Why should you ruin yourself?

Do not be excessively wicked and do not be a fool. Why should you die before your time?