If we will examine it, we shall not find, I suppose, the motion of dull and senseless matter, any where in the universe, made so little use of and so wholly thrown away.
16.

On this Hypothesis, the Soul must have Ideas not derived from Sensation or Reflection, of which there is no Appearance.
It is true, we have sometimes instances of perception whilst we are asleep, and retain the memory of those thoughts: but how extravagant and incoherent for the most part they are; how little conformable to the perfection and order of a rational being, those who are acquainted with dreams need not be told.

This I would willingly be satisfied in,--whether the soul, when it thinks thus apart, and as it were separate from the body, acts less rationally than when conjointly with it, or no.

If its separate thoughts be less rational, then these men must say, that the soul owes the perfection of rational thinking to the body: if it does not, it is a wonder that our dreams should be, for the most part, so frivolous and irrational; and that the soul should retain none of its more rational soliloquies and meditations.
17.

If I think when I know it not, nobody else can know it.
Those who so confidently tell us that the soul always actually thinks, I would they would also tell us, what those ideas are that are in the soul of a child, before or just at the union with the body, before it hath received any by sensation.