Nature has very conveniently cast the action of our sight outwards. We are swept on downstream, but to struggle back towards our self against the current is a painful movement; thus does the sea, when driven against itself, swirl back in confusion. Everyone says: 'Look at the motions of the heavens, look at society, at this man's quarrel, that man's pulse, this other man's will and testament'-in other words always look upwards or downwards or sideways, or before or behind you. Thus, the commandment given us in ancient times by the god at Delphi was contrary to all expectations: 'Look back into your self; get to know your self; hold on to your self.' . . . Can you not see that this world of ours keeps its gaze bent ever inwards and its eyes ever open to contemplate itself? It is always vanity in your case, within and without, but a vanity which is less, the less it extends. Except you alone, O Man, said that god, each creature first studies its own self, and, according to its needs, has limits to his labors and desires. Not one is as empty and needy as you, who embrace the universe: you are the seeker with no knowledge, the judge with no jurisdiction and, when all is done, the jester of the farce.
-- Michel de Montaigne
-- Michel de Montaigne