Live each day as if it be your last.
Bear in mind that the measure of a man is the worth of the things he cares about.
A rational nature admits of nothing but what is serviceable to the rest of mankind.
Does a man shrink from change? Why, what can come into being save by change?
We are born for synergy, just like the feet, just like the hands, just like the eyes, just like the rows of upper and lower teeth. Working against each other is unnatural, and being annoyed and turning one's back is counterproductive.
While you live, while it is in your power, be good.