“That which rules within, when it is according to nature, will always adapt itself easily to that which is possible and is presented to it. For it requires no definite material, in moving toward its purpose, but rather certain conditions; and it makes a material for itself out of that which opposes it, as a great fire lays hold of a mass that would have extinguished a tiny flame: when the fire is strong, it soon appropriates to itself the matter that is heaped on it and consumes it, rising higher by means of this very material.”