To see a man fearless in dangers, untainted with lusts, happy in adversity, composed in a tumult, and laughing at all those things which are generally either coveted or feared, all men must acknowledge that this can be from nothing else but a beam of divinity that influences a mortal body.
Just as so many rivers, so many showers of rain from above, so many medicinal springs do not alter the taste of the sea, so the pressure of adversity does not affect the mind of the brave man. For it maintains its balance, and over all that happens it throws its own complexion, because it is more powerful than external circumstances.
As for old age, embrace and love it. It abounds with pleasure, if you know how to use it. The gradually (I do not say rapidly) declining years are amongst the sweetest in a man's life; and, I maintain, that even where they have reached the extreme limit, they have their pleasure still.