Meditations by Marcus Aurelius Book 2 Page 9

XI. Consider with thyself how man, and by what part of his, is joined unto God, and how that part of man is affected, when it is said to be diffused. There is nothing more wretched than that soul, which in a kind of circuit compasseth all things, searching (as he saith) even the very depths of the earth; and by all signs and conjectures prying into the very thoughts of other men’s souls; and yet of this, is not sensible, that it is sufficient for a man to apply himself wholly, and to confine all his thoughts and cares to the tendance of that spirit which is within him, and truly and really to serve him.

His service doth consist in this, that a man keep himself pure from all violent passion and evil affection, from all rashness and vanity, and from all manner of discontent, either in regard of the gods or