When we diminish or encrease a relish, it is not after the same manner that we diminish or encrease any visible object; and when several sounds strike our hearing at once, custom and reflection alone make us form an idea of the degrees of the distance and contiguity of those bodies, from which they are derived.

Whatever marks the place of its existence either must be extended, or must be a mathematical point, without parts or composition.

What is extended must have a particular figure, as square, round, triangular; none of which will agree to a desire, or indeed to any impression or idea, except to these two senses above-mentioned.

Neither ought a desire, though indivisible, to be considered as a mathematical point.

For in that case it would be possible, by the addition of others, to make two, three, four desires, and these disposed and situated in such a manner, as to have a determinate length, breadth and thickness; which is evidently absurd.
It will not be surprising after this, if I deliver a maxim, which is condemned by several metaphysicians, and is esteemed contrary to the most certain principles of hum reason.