George Washington's Rules of Civility Traced to their Sources and Restored by Moncure D. Conway
Chapter vii. 27. Quand ceux qui out sur vous commandement, parlent
à quelqu'vn, gardez vous bien de parler, de rire, ou de les escouter.
When your Superiors talk to any one, do not speak, laugh, or listen.
85th. In Company of these of Higher Quality than yourself Speak not till you are ask'd a Question then Stand upright put of your Hat & Answer in few words