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Man is the only animal that laughs and weeps; for he is the only animal that is struck with the difference between what things are, and what they ought to be. We weep at what thwarts or exceeds our desires in serious matters: we laugh at what only disappoints our expectations in trifles. We shed tears from sympathy with real and necessary distress; as we burst into laughter from want of sympathy with that which is unreasonable and unnecessary, the absurdity of which provokes our spleen or mirth, rather than any serious reflections on it.
To explain the nature of laughter and tears, is to account for the condition of human life; for it is in a manner compounded of these two! It is a tragedy or a comedy—sad or merry, as it happens. The crimes and misfortunes that are inseparable from it, shock and wound the mind when they once seize upon it, and when the pressure can no longer be borne, seek relief in tears: the follies and absurdities that men commit, or the odd accidents that befal them, afford us amusement from the very rejection of these false claims upon our sympathy, and end in laughter. If everything that went wrong, if every vanity or
weakness in another gave us a sensible pang, it would be hard indeed: but as long as the disagreeableness of the consequences of a sudden disaster is kept out of sight by the immediate oddity of the circumstances, and the absurdity or unaccountableness of a foolish action is the most striking thing in it, the ludicrous prevails over the pathetic, and we receive pleasure instead of pain from the farce of life which is played before us, and which discomposes our gravity as often as it fails to move our anger or our pity!
Tears may be considered as the natural and involuntary resource of the mind overcome by some sudden and violent emotion, before it has had time to reconcile its feelings to the change of circumstances: while laughter may be defined to be the same sort of convulsive and involuntary movement, occasioned by mere surprise or contrast (in the absence of any more serious emotion,) before it has time to reconcile its belief to contradictory appearances.
If we hold a mask before our face, and approach a child with this disguise on, it will at first, from the oddity and incongruity of the appearance, be inclined to laugh; if we go nearer to it, steadily, and without saying a word, it will begin to be alarmed, and be half-inclined to cry: if we suddenly take off the mask, it will recover from its fears, and burst out a-laughing; but if, instead of presenting the old well-known countenance, we have concealed a satyr's head or some frightful caricature behind the first mask, the suddenness of the change will not in this case be a source of merriment to it, but will convert its surprise into an agony of consternation, and will make it scream out for help, even though it may be convinced that the whole is a trick at bottom.
The alternation of tears and laughter, in this little episode in common life, depends almost entirely on the greater or less degree of interest attached to the different changes of appearance.
The mere suddenness of the transition, the mere baulking our expectations, and turning them abruptly into another channel, seems to give additional liveliness and gaiety to the animal spirits; but the instant the change is not only sudden, but threatens serious consequences, or calls up the shape of danger, terror supersedes our disposition to mirth, and laughter gives
place to tears. It is usual to play with infants, and make them laugh by clapping your hands suddenly before them; but if you clapped your hands too loud, or too near their sight, their countenances immediately change, and they hide them in the nurse's arms. Or suppose the same child, grown up a little older, comes to a place, expecting to meet a person it is particularly fond of, and does not find that person there, its countenance suddenly falls, its lips begin to quiver, its cheek turns pale, its eye glistens, and it vents its little sorrow (grown too big to be concealed) in a flood of tears. Again, if the child meets the same person unexpectedly after a long absence, the same effect will be produced by an excess of joy, with different accompaniments; that is, the surprise and the emotion excited will make the blood come into his face, his eyes sparkle, his tongue falter or be mute, but in either case the tears will gush to his relief, and lighten the pressure about his heart. On the other hand, if a child is playing at hide-and-seek, or blind-man's-buff, with persons it is ever so fond of, and either misses them where it had made sure of finding them, or suddenly runs up against them where it had least expected it, the shock or additional impetus given to the imagination by the disappointment or the discovery, in a matter of this indifference, will only vent itself in a fit of laughter.* The transition here is not from one thing of importance to another, or from a state of indifference to a state of strong excitement; but merely from one impression to another that we did not at all expect, and when we had expected just the contrary. The mind having been led to form a certain conclusion, and the result producing an immediate solution of continuity in the chain of our ideas, this alternate excitement and relaxation of the imagination, the object also striking upon the mind more vividly in its loose unsettled state, and before it has had time to recover and collect itself, causes that alternate excitement and relaxation, or irregular convulsive movement of the muscular and nervous system, which consti
* A child that has hid itself out of the way in sport, is under a great temptation to laugh at the unconsciousness of others as to its situation. A person concealed from assassins, is in no danger of betraying his situation by laughing.