People of experience maintain that it is very sensible to start from a principle. I grant them that and start with the principle that all men are boring. Or will someone be boring enough to contradict me in this? The principle possesses to the highest degree that power of repulsion one always requires of any negative that genuinely provides the principle of motion. Not merely is it repellent, it is infinitely forbidding; and the person with this principle behind him must necessarily have infinite momentum to make discoveries with.