EPICTETUS. MANUAL. 33.
IN parties of conversation, avoid a frequent and excessive mention of your own actions and dangers. For, however agreeable it may be to yourself to mention the risks you have run, it is not equally agreeable to others to hear your adventures. Avoid, likewise, an endeavour to excite laughter. For this is a slippery point, which may throw you into vulgar manners, and, besides, may be apt to lessen you in the esteem of your acquaintance. Approaches to indecent discourse are likewise dangerous. Whenever, therefore, anything of this sort happens, if there be a proper opportunity, rebuke him who makes advances that way; or, at least, by silence and blushing and a forbidding look, show yourself to be displeased by such talk.