When the well is dry, people know the worth of water. [so appreciate what you have while you have it]
Do good to your friends to keep them, to your enemies to win them.
Anger and folly walk cheeck by jowl.
Leisure is the time for doing something useful. This leisure the diligent person will obtain the lazy one never.
Those things that hurt, instruct.
Time is money'... Waste it now. Pay for it later!