The best Armour of Old Age is a well spent life preceding it; a Life employed in the Pursuit of useful Knowledge, in honourable Actions and the Practice of Virtue; in which he who labours to improve himself from his Youth, will in Age reap the happiest Fruits of them; not only because these never leave a Man, not even in the extremest Old Age; but because a Conscience bearing Witness that our Life was well-spent, together with the Remembrance of past good Actions, yields an unspeakable Comfort to the Soul
The rule of friendship means there should be mutual sympathy between them, each supplying what the other lacks and trying to benefit the other, always using friendly and sincere words.
It is generally said, "Past labors are pleasant," Euripides says, for you all know the Greek verse, "The recollection of past labors is pleasant."
[Lat., Vulgo enim dicitur, Jucundi acti labores: nec male Euripides: concludam, si potero, Latine: Graecum enim hunc versum nostis omnes: Suavis laborum est proeteritorum memoria.
The impulse which directs to right conduct, and deters from crime, is not only older than the ages of nations and cities, but coeval with that Divine Being who sees and rules both heaven and earth.
Not to know what happened before you were born is to be a child forever. For what is the time of a man, except it be interwoven with that memory of ancient things of a superior age?
To give and receive advice - the former with freedom, and yet without bitterness, the latter with patience and without irritation - is peculiarly appropriate to geniune friendship.