Marcus Aurelius: “He often acts unjustly who does not do a certain thing; not only he who does a certain thing.”

As thou intendest to live when them art gone out, ... so it is in thy power to live here.

He was accustomed to do acts of beneficence, and was ready to forgive, and was free from all falsehood; and he presented the appearance of a man who could not be diverted from right, rather than of a man who had been improved.

The third, then, is the ruling part; consider thus: Thou art an old man; no longer let this be a slave, no longer be pulled by the strings like a puppet to unsocial movements, no longer be either dissatisfied with thy present lot, or…

Be cheerful also, and seek not external help nor the tranquillity which others give.