Whatever begins, also ends.
Everything that exceeds the bounds of moderation has an unstable foundation.
Whatever fortune has raised to a height, she has raised only to cast it down.
Not to feel one's misfortunes is not human, not to bear them is not manly.
Without an adversary prowess shrivels. We see how great and efficient it really is only when it shows by endurance what it is capable of.
If you don't know, ask. You will be a fool for the moment, but a wise man for the rest of your life.