Keep a Store of Sarcasms, and know how to use them. This is the point of greatest tact in human intercourse. Such sarcasms are often thrown out to test men’s moods, and by their means one often obtains the most subtle and penetrating touchstone of the heart. Other sarcasms are malicious, insolent, poisoned by envy or envenomed by passion, unexpected flashes which destroy at once all favour and esteem. Struck by the slightest word of this kind, many fall away from the closest intimacy with superiors or inferiors which could not be the slightest shaken by a whole conspiracy of popular insinuation or private malevolence. Other sarcasms, on the other hand, work favourably, confirming and assisting one’s reputation. But the greater the skill with which they are launched, the greater the caution with which they should be received and the foresight with which they should he foreseen. For here a knowledge of the evil is in itself a means of defence, and a shot foreseen always misses its mark.