George Washington's Rules of Civility Traced to their Sources and Restored by Moncure D. Conway
Chapter ii. 3. Gardez-vous bien de toucher de la main aucune partie
de vostre corps, de celles qui ne sont point en veuë, en la presence d'aucune autre personne. Pour les mains, & le visage, cela leur est ordinaire. Et afin de vous y accoustumer pratiquez ce poinct de ciuilité mesme en vostre particulier.
In the presence of any one, never put your hand to any part of the person not usually uncovered. As for the hands and face they are usually visible. In order to form a habit in this point of decency, practise it even when with your intimate friend.
3d. Shew Nothing to your Friend that may affright him.