tell what he means by Reason, let us see what Ratio, Reason is; and what Reasoning is; and why Man is onely said to be a reasonable creature. Reason is properly that power of the soul, by which a Man is discerned from other living creatures, and by which he does excell and command them: By Horace it is put for the reasoning and discoursing of the soul, for finding out what is true; Ratio ponitur pro ratiocinatione & discursu animi, ad investigandum verum. Cicero lib. 2. ad Heren. Ratio est causa quae demonstrat verum esse id, quod intendimus brevi subjectione; Reason is the cause which shews that thing to be true, which we intend in a short view: And Reason is many times equivocally used for Counsel, as Cicero in Verr. Mea quidem ratio, cum in praeteritis rebus est cognita, tum in reliquis explorata & provisa est; My counsel is as well known in things past, as throughly tried and provided in other things. Sometime for Respect; Habenda est ratio honoris, Men ought to respect their honor. Sometime for Care; Habenda est ratio rei familiaris, Men must look after their houshold-affairs. Sometime for Business; Rationem habet cum terra, quae nunquam recusat imperium, He busieth himself with his land which never disobeys him. Thus far Calapine. Sometime it is taken for Account, Lu. 16. 2. Redde rationem villicationis tuae, Give an account of thy Stewardship. Ratio, in the third Definition of the fifth Book of Euclide, est duarum magnitudinum ejusdem generis, mutua quaedam secundum quantitatem, habitudo: Reason is a certain mutual habit, of two magnitudes of the same kind after their quantity: As when two Quantities of the same kind, two Numbers, two Lines, two Superficies, two Solids, &c. are compared one to another, ac∣cording to their quantity, that is, accordingly as one is greater, less, or equal to another; this comparison or mutual habit of one to another, was by Geometricians called Ratio. But now, I know not by what habit or custom, Proportio, (which definition 4o lib. 5. Euclid. is, Rationum simili∣tudo; And definition 5, consists in three terms at least, for indeed it must consist in four; for where it is in three, the medium is iterated twice, as what proportion four hath to six, six hath to nine, &c.) hath eaten the former quite up, and is only used.
Or take Reason thus: Reason is that by which men from given Prin∣ciples, do rightly infer and deduce Conclusions. And Reasoning is two∣fold, either à priori, or à posteriori: A priori, from the cause, nature, and mat∣ter of necessary truths, to shew what effects follow from thence; and such Propositions are called demonstrative or scientifical, shewn and known from the Causes; such are all Propositions in Geometry and Mathema∣tiques: Or when the Effect is certain, and the Cause probable; and these are but probable Conclusions, such as those in Philosophy and Physick. As I would know the reason why Summer is hotter then Winter, for so I find it to be; why, thus I reason: It cannot be from the propinquity of the Sun to the Earth, in Summer more then in Winter, for the Earth is but a Point in proportion to the Universe; besides, the Sun is nearer to the Earth in Winter then in Summer, for the Orbis magnus is not Spherical or Circular, but Eccentrical and Elliptical, which is plain, because the revo∣lution of the Earth, or the Suns motion, is finished in less time from the Autumnal Equinox to the Vernal, then from the Vernal to the Autumnal, and therefore nearer to the Earth in Winter then in Summer. It is not then from the Suns nearness to the Earth, which makes the Summer hotter