Nor is it, in modern times, authors or actors alone who are subject to the hiss. The orator may provoke it by a bold speech in support of an unpopular measure or an unpopular man. But here the hisser is not so safe, nor the hissee--to coin a convenient word--so defenceless. The orator is not hampered by the studied words of a written part: he has the right of free speech, and he may retort upon his sibilant surrounders. Macready records that on one occasion, when Sheil was hissed, he "extorted the applause of his assailants by observing to them, 'You may hiss, but you cannot sting.'" Even finer was the retort of Coleridge under similar circumstances: "When a cold stream of truth is poured on red-hot prejudices, no wonder they hiss."
Sir William Knighton declares that George II. never entered a theatre save in fear and trembling from dread of hearing a single hiss, which, though it were at once drowned in tumultuous applause, he would lie awake all night thinking about, entirely forgetful of the enthusiasm it had evoked. He must have felt as Charles Lamb did, who wrote: "A hundred hisses (hang the word! I write it like kisses--how different!)--a hundred hisses outweigh a thousand claps. The former come more directly from the heart." It is hard to entirely agree with Lamb here. Hissing seems to me to proceed for the most part from ill-temper, or at least from the dissatisfaction of the head. Applause is often the outburst of the heart, the gush of a feeling, an enthusiasm incapable of restraint. No wonder that the retired actor longs for a sniff of the footlights and for the echo of the reverberating plaudits to the accompaniment of which he formerly bowed himself off.
Indeed, applause is the breath of an actor's nostrils. Without it good acting is almost impossible. Actors, like other artists, need encouragement. Applause gives heart, and, as Mrs. Siddons said, "better still--breath." Mrs. Siddons's niece has put on record her views, as valuable as her famous relative's: "'Tis amazing how much an audience loses by this species of hanging back, even when the silence proceeds from unwillingness to interrupt a good performance: though in reality it is the greatest compliment an actor can receive, yet he is deprived by that very stillness of half his power. Excitement is reciprocal between the performer and the audience: he creates it in them, and receives it back again from them."