If the interview is to last only an instant, he might hold his cigar in his hand; if the lady stopped to talk for several minutes or if she invited him to drive with her, he would naturally throw it away; at the very least, he would offer to do so. A woman of his own age who did not mind smoking might beg him to keep his cigar.

Why not, if we know them? If we are on pleasant conversational terms with the butcher, the baker, and candlestick maker in their shops, we should naturally recognize them in the street or anywhere.

Never. A wife who accepts some small politeness from her husband by saying “You must have a guilty conscience” or “You must want me to do something for you,” instead of a grateful “Thank you,” discourages further civility.