Chapter XX. Of the force of imagination. "Fortis imaginatio generat casum," say the schoolmen. ["A strong imagination begets the event itself."--Axiom. Scholast.] I am one of those who are most sensible of the power of imagination: every one is jostled by it, but some are overthrown by it. It has a very piercing impression upon me; and I make it my business to avoid, wanting force to resist it. I could live by the sole help of healthful and jolly company: the very sight of another's pain materially pains me, and I often usurp the sensations of another person. A perpetual cough in another tickles my lungs and throat. I more unwillingly visit the sick in whom by love and duty I am interested, than those I care not for, to whom I less look. I take possession of the disease I am concerned at, and take it to myself. I do not at all wonder that fancy should give fevers and sometimes kill such as allow it too much scope, and are too willing to entertain it. Simon Thomas was a great physician of his time: I remember, that happening one day at Toulouse to meet him at a rich old fellow's house, who was troubled with weak lungs, and discoursing with the patient about the method of his cure, he told him, that one thing which would be very conducive to it, was to give me such occasion to be pleased with his company, that I might come often to see him, by which means, and by fixing his eyes upon the freshness of my complexion, and his imagination upon the sprightliness and vigour that glowed in my youth, and possessing all his senses with the flourishing age wherein I then was, his habit of body might, peradventure, be amended; but he forgot to say that mine, at the same time, might be made worse. Gallus Vibius so much bent his mind to find out the essence and motions of madness, that, in the end, he himself went out of his wits, and to such a degree, that he could never after recover his judgment, and might brag that he was become a fool by too much wisdom. Some there are who through fear anticipate the hangman; and there was the man, whose eyes being unbound to have his pardon read to him, was found stark dead upon the scaffold, by the stroke of imagination. We start, tremble, turn pale, and blush, as we are variously moved by imagination; and, being a-bed, feel our bodies agitated with its power to that degree, as even sometimes to expiring. And boiling youth, when fast asleep, grows so warm with fancy, as in a dream to satisfy amorous desires:-- "Ut, quasi transactis saepe omnibu rebu, profundant Fluminis ingentes, fluctus, vestemque cruentent." Although it be no new thing to see horns grown in a night on the forehead of one that had none when he went to bed, notwithstanding, what befell Cippus, King of Italy, is memorable; who having one day been a very delighted spectator of a bullfight, and having all the night dreamed that he had horns on his head, did, by the force of imagination, really cause them to grow there. Passion gave to the son of Croesus the voice which nature had denied him. And Antiochus fell into a fever, inflamed with the beauty of Stratonice, too deeply imprinted in his soul. Pliny pretends to have seen Lucius Cossitius, who from a woman was turned into a man upon her very wedding-day.