Sirach (Ecclesiasticus) 20:22-24 Good News Bible Catholic Edition (GNBDK)

22. You can lose all your self-respect by being reluctant to speak up in the presence of stupidity.

23. If you promise a friend something because you are too bashful to say no, you're making an enemy needlessly.

24. Lying is an ugly blot on a person's character, but ignorant people do it all the time.

Sirach (Ecclesiasticus) 20