I should moreover declare in general (for I pretend not to be able to do it otherwise) not only why I Conceive that Colours, Odors, Tasts, Fluidness and Solidity, and those other qualities that Diversifie and Denominate Bodies may Intelligibly be Deduced from these three; but how two of the Three Epicurean Principles (which, I need not tell, you are Magnitude, Figure and Weight) are Themselves Deducible from Matter and Motion; since the Latter of these Variously Agitating, and, as it were, Distracting the Former, must needs disjoyne its parts; which being Actually separated must Each of them necessarily both be of some Size, and obtain some shape or other. Nor did I add to our Principles the Aristotelean Privation, partly for other Reasons, which I must not now stay to insist on; and partly because it seems to be rather an Antecedent, or a Terminus a quo, then a True Principle, as the starting-Post is none of the Horses Legs or Limbs.
I should also explain why and how I made rest to be, though not so considerable a Principle of things, as Motion, yet a Principle of them; partly because it is (for ought we know as Ancient at least as it, and depends not upon Motion, nor any other quality of matter; and partly, because it may enable the Body in which it happens to be, both to continue in a State of Rest till some external force put it out of