Meditation 4.4

4. If mind is common to us all, then also the reason, whereby we are reasoning beings, is common. If this be so, then also the reason which enjoins what is to be done or left undone is common. If this be so, law also is common; if this be so, we are citizens; if this be so, we are partakers in one constitution; if this be so, the Universe is a kind of Commonwealth. For in what other common government can we say that the whole race of men partakes? And thence, from this common City, is derived our mind itself, our reason and our sense of law, or from what else? For as the earthy is in me a portion from some earth, and the watery from a second element, and the vital spirit from some source, and the hot and fiery from yet another source of its own (for nothing comes from nothing, just as nothing returns to nothing), so therefore the mind also has come from some source.