Ecclesiastes 10:13-15

New Catholic Bible

¹³ The words a fool utters are grounded in stupidity,
    and they end in total madness.
¹⁴ A fool talks at great length,
    but no one knows what direction his words will take,
    and who can foretell what the future holds?
¹⁵ A fool quickly gets worn out by his labor,
    and he cannot even find his own way into town.^[a]