Sirach 21:22-24

Revised Standard Version

²² The foot of a fool rushes into a house,
    but a man of experience stands respectfully before it.
²³ A boor peers into the house from the door,
    but a cultivated man remains outside.
²⁴ It is ill-mannered for a man to listen at a door,
    and a discreet man is grieved by the disgrace.