The Weather and the Words in Passing : Page 227
What the something else will be is important in making you a person whom people are delighted to run into, or vaguely prefer not to encounter. Naturally, the first of all instincts you must have is time and timing. You must either sense or ask whether or not the other is at leisure or in a
hurry. Just as in telephoning someone, it is well to ask if he is at ease or just about to eat or to catch a train, so in a casual street or lobby meeting one must either sense or ask the same thing. Under no circumstances must you say anything that would hold anyone a moment longer than his time seems to permit.