Do not, when narrating an incident, continually say, "you see," "you know."
Do not allow yourself to lose temper or speak excitedly.
Do not introduce professional or other topics that the company generally cannot take an interest in.
Do not talk very loud. A firm, clear, distinct, yet mild, gentle, and musical voice has great power.
Do not be absent-minded, requiring the speaker to repeat what has been said that you may understand.
Do not try to force yourself into the confidence of others.
Do not use profanity, vulgar terms, words of double meaning, or language that will bring the blush to anyone.
Do not allow yourself to speak ill of the absent one if it can be avoided. The day may come when some friend will be needed to defend you in your absence.
Do not speak with contempt and ridicule of a locality which you may be visiting. Find something to truthfully praise and commend; thus make yourself agreeable.