— 382 —
      §11. So that all our complex Ideas of Substances are imperfect and
inadequate. Which would be so also in mathematical Figures, if we
were to have our complex Ideas of them, only by collecting their
Properties, in reference to other Figures. How uncertain, and im-
perfect, would our Ideas be of an Ellipsis, if we had no other Idea of
it, but some few of its Properties? Whereas having in our plain Idea,
the whole Essence of that Figure, we from thence discover those
Properties, and demonstratively see how they flow, and are in-
separable from it.
Locke Hum II, 31, §11, p. 382