Read it through once

FALSTAFF. And these are not fairies? I was three or four times in the thought they were not fairies; and yet the guiltiness of my mind, the sudden surprise of my powers, drove the grossness of the foppery into a received belief, in despite of the teeth of all rhyme and reason, that they were fairies. See now how wit may be made a Jack-a-Lent when ’tis upon ill employment!