A good disposition is a virtue in itself, and it is lasting; the burden of the years cannot depress it, and love that is founded on it endures to the end.
Take this at least, this last advice, my son:
Keep a stiff rein, and move but gently on:
The coursers of themselves will run too fast,
Your art must be to moderate their haste.
Nothing in the entire universe ever perishes, believe me, but things vary, and adopt a new form. The phrase being born is used for beginning to be something different from what one was before, while dying means ceasing to be the same. Though this thing may pass into that, and that into this, yet the sums of things remains unchanged.