¶Of sleepe. Cap. 26.
*THen in sléepe take héede of his will that sléepeth, for he disposeth him willingly to sléepe: for Auicen faith, that sléepe is nought els but appetite of rest, in the vertue of feelyng. Also of shortnes of sléepe, for when a man disposeth him and layeth him downe to sléepe, his pur∣pose is to rise soone. Also of vnitie, and ioyning of vertue in sléepe: for the ver∣tue that is shed in waking, is gathered and ioyned in his body that sleepeth, as Auicen saith. Also of his vnféelingnesse that sléepeth, as it is knowen by things that are before sayd: for it hapneth ofte that a man sléepeth so strongly & so fast, that vneth he feeleth any thing without; though he be beaten. Also the sweetnes of rest: for swéetenesse in sleeping ma∣keth him forget all manner of trauailes that were, and also be. Also he is in sure∣tie that sleepeth: for while he sléepeth he dreadeth not the cruelnesse of his enimy. Also chaunging and diuersitie of his shape that sleepeth: for without hée sée∣meth dead, and alyue within: pale with∣out, and ruddie within: colde without, and hot within: without all the vertue of working sheddeth it selfe, as it is two contraries, but within all the vertue ga∣thereth it selfe togethers. Also men shal take héede of diuersitie in sléeping, for some beasts sléepe with eyen closed, and the lyddes fast togethers: and all such beastes haue sharper sight than other beastes that sléepe with open eyen, and vnclosed, as Arist. saith: and therefore fish haue féeble sight, for they cloase not their eyen in sléeping, and as he saith li. 4. Fish resteth in sléepe, but that is litle, for they wake sodainly and flee. Seeke before lib. 5. in the chapter of the eye lyd and of the eye. Also men take héede of imaginations, of dreames and of fanta∣sies: for in sléeping, for meddeling of re∣son with fantasies, the soule thinketh of manye fantasies: and the soule know∣eth some deale by imagination the like∣nesse and the shape thereof, and hath no full iudgement of these things and fan∣tasies: and therefore ofte when a man waketh, he taketh no héede what he séeth in his sléepe. Also men shall namely take héede of profite that is in sléepe: for if the sléepe be kindly and temperate, it doth to the body great profite and many com∣modities, as it is said before in ye words of Auicen and of Constantine: & name∣ly for that then is wrought good digesti∣on, & pure things departed from things that is vnpured: for that yt is pure & like to the bodie, is then ioyned to the bodie: and that which is vnpured and vnlyke to she bodye, is seuered from the bodye by working of the vertue expulsiue of out putting. Of euill sléepe and vnkinde∣ly, looke farthermore in libro 7. de Li∣targia.
Much sleeping commeth of flegma∣tike humour and rume:*little sleepe commeth of great studie or weaknesse of powers.