Chapter XXXI: Madam,

Your _Author_, in opposition to the Schools, endeavouring to prove that there are no humors in an animal body, except blood, proves many humors in himself. But I can see no reason, why Nature should not make several humors, as well as several Elements, Vegetables, Minerals, Animals, and other Creatures; and that in several parts of the body, and many several ways; for to mention but one sort of other Creatures, _viz._ Vegetables, they are, as we see, not onely produced many several ways, but in many several grounds; either by sowing, setting, or grafting, either in clayie, limy, sandy, chalky, dry, or wet grounds: And why may not several humors be produced as well of other Creatures and parts, as others are produced of them? for all parts of Nature are produced one from another, as being all of one and the same Matter, onely the variation of corporeal motions makes all the difference and variety between them, which variety of motions is impossible to be known by any particular Creature; for Nature can do more then any Creature can conceive. Truly, _Madam_, I should not be of such a mind, as to oppose the Schools herein so eagerly as your _Author_ doth; but artificial actions make men to have erroneous opinions of the actions of Nature, judging them all according to the rule and measure of Art, when as Art oft deludes men under the cover of truth, and makes them many times believe falshood for truth; for Nature is pleased with variety, and so doth make numerous absurdities, doubts, opinions, disputations, objections, and the like. Moreover, your _Author_ is as much against the radical moisture, as he is against the four humors; saying, that according to this opinion of the Schools, a fat belly, through much grease affording more fuel to the radical moisture, must of necessity live longer. But this, in my opinion, is onely a wilful mistake; for I am confident, that the Schools do not understand radical moisture to be gross, fat radical oyl, but a thin oylie substance. Neither do they believe radical heat to be a burning, fiery and consuming heat, but such a degree of natural heat, as is comfortable, nourishing, refreshing, and proper for the life of the animal Creature: Wherefore radical heat and moisture doth not onely consist in the Grease of the body; for a lean body may have as much, and some of them more Radical moisture, then fat bodies. But your _Author_ instead of this radical moisture, makes a nourishable moisture, onely, as I suppose, out of a mind to contradict the Schools; when as I do not perceive, that the Schools mean by Radical moisture, any other then a nourishable moisture, and therefore this distinction is needless. Lastly, he condemns the Schools, for making an affinity betwixt the bowels and the brain. But he might as will condemn Politicians, for saying there is an affinity betwixt Governors and Subjects, or betwixt command and obedience; but as the actions of Particulars, even from the meanest in a Commonwealth, may chance to make a Publick disturbance, so likewise in the Common-wealth of the body, one single action in a particular part may cause a disturbance of the whole Body, nay, a total ruine and dissolution of the composed; which dissolution is called Death; and yet these causes are neither Light, nor Blas, nor Gas, no more then men are shining Suns, or flaming Torches, or blazing Meteors, or azure Skies. Wherefore leaving your _Author_ to his contradicting humor, I rest,

Madam,

_Your faithful Friend_

_and Servant._