²⁰ Like vinegar on a wound^[a]
    is one who sings songs to a heavy heart.
Like a moth in clothing or a worm in wood,
    sorrow gnaws at the human heart.^[b]

¹⁵ The rod and reproof give wisdom,
    but a mother is disgraced by a neglected child.^(A)

²⁰ A proverb from a fool’s lips will be rejected,
    for he does not tell it at the proper time.^(A)