Sirach 4:20-25

New Revised Standard Version Catholic Edition

²⁰ Watch for the opportune time, and beware of evil,
    and do not be ashamed to be yourself.
²¹ For there is a shame that leads to sin,
    and there is a shame that is glory and favor.
²² Do not show partiality, to your own harm,
    or deference, to your downfall.
²³ Do not refrain from speaking at the proper moment,^[a]
    and do not hide your wisdom.^[b]
24 For wisdom becomes known through speech,
    and education through the words of the tongue.
²⁵ Never speak against the truth,
    but be ashamed of your ignorance.