Meditation 2.13
13. Nothing is more wretched than the man who goes round and round everything, and, as Pindar says, 'searches the bowels of the earth', and seeks by conjecture to sound the minds of his neighbours, but fails to perceive that it is enough to abide with the Divinity that is within himself and to do Him genuine service. Now that service is to keep Him unsullied by passion, trifling, and discontent with what comes from God or men. What comes from the Gods is to be revered because of excellence; what comes from men is dear because they are of one kindred with himself; pitiful too sometimes, humanly speaking, by reason of their ignorance of good and ill. This disablement is more grievous than that which robs the eyes of the power to distinguish light from darkness.