impeded either by the subtilty of the whole body or by the minuteness of the parts, or by the distance of place, or tardity and velocity of motion, or by the familiarity of the object, or by reason of other causes. Neither again, where the sense doth apprehend the thing, are those apprehensions sufficiently firm. For the testimony and information of sense is always from the Analogie of Man, not from the Analogie of the Universe.” And it is altogether asserted with great error, that sense is the measure of things. Neither can these notions the Doctor would make so clear, be had or gathered, without some intimation from some of the senses. [Sidenote: _An Antidot. &c._ _p._ 12.] [Sidenote: _Immortal._ _p._ 21.] 2. Further the Doctor tells us that the Idea of a Spirit is as easie a notion, as of any other substance whatsoever. And he also saith: “Nevertheless I shall not at all stick to affirm, that his Idea or notion (speaking of God) is as easy as any notion else whatsoever, and that we may know as much of him as of any thing else in the World.” This later he speaketh concerning God. But that these assertions are unsound, these following reasons will sufficiently evince. [Sidenote: _Reas. 1._] 1. He doth define a Spirit thus: A Spirit is a substance penetrable and indiscerpible. Now if it be true that he affirms before, that, “the subject, or naked essence, or substance of a thing is utterly unconceiveable to any of our faculties, and that if we take away aptitudes, operations, properties and modifications from a subject, that then the conception vanisheth into nothing, but into the Idea of a meer undiversificated substance, so that one substance is not then distinguishable from another, but only from accidents or modes, to which properly belongs no subsistence.” So then if we take away penetrability and indiscerpibility, which are but the modes and properties of a Spirit, whose genus he maketh substance to be, then it vanisheth into an indistinguishable notion, and so his definition comes to nothing. [Sidenote: _Reas. 2._] 2. For if substances be known by their properties and modifications, as we grant they are, the modifications and properties must of necessity be some ways known unto us: but there are no ways either by common notions, evidence of the senses, or sound deductions of reason that can certainly inform us of these properties or modifications of penetrability and indiscerpibility, and the Doctor yet never proved either; but is only a bare supposition, and a melancholy figment. [Sidenote: _Reas. 3._] [Sidenote: The Immort. p. 68.] [Sidenote: _De Inject._ _p._ 598.] [Sidenote: _De Natur. Subst. Energ._ _p._ 406.]