I was lucky enough to see the new production of King Lear in the newly refurbished theatre at Stratford on Saturday. It's an excellent production and I recommend it if you have the opportunity to go. One of the few wise characters in the play is the fool, and he delivers this lesson to King Lear:
Speak less than thou knowest,
Lend less than thou owest,
Ride more than thou goest,
Learn more than thou trowest,
Set less than thou throwest,
Leave thy drink and thy whore
And keep in-a-door,
And thou shalt have more
Than two tens to a score.
Good advice!