16. But we shall begin and treat of each of these, and first we shall discourse of those exercises which are proper for a scholar. And as he that said he should prescribe nothing for the teeth to them that dwelt by the seaside taught them the benefit of the sea-water, so one would think that there was no need of writing to scholars concerning exercise. For it is wonderful what an exercise the daily use of speech is, not only as to health but even to strength. I mean not fleshly and athletic health, or such as makes one’s external parts firm, like the outside of a house, but such as gives a right tone and inward vigor to the vital and noble parts. And that the vital spirit increases strength is made plain by them who anointed the wrestlers, who commanded them, when their limbs were rubbed, to withstand such frictions in some sort, in holding their wind, observing carefully those parts of the body which were smeared and rubbed.[122] Now the voice, being a motion of the spirit, not superficially but firmly seated in the bowels, as it were in a fountain, increases the heat, thins the blood, purges every vein, opens all the arteries, neither does it permit the coagulation or condensation of any superfluous humor, which would settle like dregs in those vessels which receive and work our nourishment. Wherefore we ought by much speaking to accustom ourselves to this exercise, and make it familiar to us; and if we suspect that our bodies are weaker or more tired than ordinary, by reading or reciting. For what riding in a coach is compared with bodily exercise, that is reading compared with disputing, if you carry your voice softly and low, as it were in the chariot of another man’s words. For disputes bring with them a vehemence and contention, adding the labor of the mind to that of the body. All passionate noise, and such as would force our lungs, ought to be avoided; for irregular and violent strains of our voice may break something within us, or bring us into convulsions. But when a student has either read or disputed, before he walks abroad, he ought to make use of a gentle and tepid friction, to open the pores of his body, as much as is possible, even to his very bowels, that so his spirits may gently and quietly diffuse themselves to the extreme parts of his body. The bounds that this friction ought not to exceed are, that it be done no longer than it is pleasant to our sense and without pain. For he that so allays the disturbance which is within himself and the agitation of his spirits will not be troubled by that superfluity which remains in him; and if it be unseasonable for to walk, or if his business hinder him, it is no great matter; for nature has already received satisfaction. Whether one be at sea or in a public inn, it is not necessary that he should be silent, though all the company laugh at him. For where it is no shame to eat, it is certainly no shame to exercise yourself; but it is worse to stand in awe of and