"As I state quite plainly in Principia Mathematica, " said Isaac, in a bit of a high clarion self-righteous tone, "it is not my intention, in that work, to consider the causes and seats of Force. That gravity exists, and acts at a distance, is taken as a given. Why and how it does so are not considered. I would not be human if I did not have some curiosity as to what gravity was, and how it works; and even if ’twere otherwise, Baron von Leibniz and his Continental supporters would never allow me a moment’s peace on the matter. So, yes! I would understand Force. I have toiled at it. The ignorant have styled my toils Alchemy."