Not sure where these came from, but I found them amusing:

1. The journey of a thousand miles begins with a broken fan belt.

2. It’s always darkest before dawn. So if you’re going to read your neighbor’s newspaper, that’s the time to do it.

3. Don’t be irreplaceable. If you can’t be replaced, you can’t be promoted

4. Always remember that you’re unique. Just like everyone else.

5. Never test the depth of the water with both feet.

7. Before you criticize someone, you should walk a mile in their shoes. That way, when you criticize them, you’re a mile away and you have their shoes.

8. If at first you don’t succeed, skydiving is not for you.

9. Give a man a fish and he will eat for a day. Teach him how to fish, and he will sit in a boat and drink beer all day.

10. If you lend someone $20 and never see that person again, it may have been worth it.

11. If you tell the truth, you don’t have to remember why or when.

12. Some days you’re the bug; some days you’re the windshield.

13. A closed mouth gathers no foot.

14. There are two theories to arguing. Neither wins.

15. Experience is something you don’t get until just after you need it.

There could be more about the importance of nothingness, or the lessons from passive versus active involvement, but at least it is funny.

Number 13, for example, could be taken to mean that a closed mouth is best because there is less risk. However, this seems counter to many Zen sayings that laud open spaces for their utility, and do not try to fight against the risks of utility.

Tao Te Ching #11, as translated by Charles Muller, gives a fine example:

Thirty spokes join together in the hub.
It is because of what is not there that the cart is useful.
Clay is formed into a vessel.
It is because of its emptiness that the vessel is useful.
Cut doors and windows to make a room.
It is because of its emptiness that the room is useful.
Therefore, what is present is used for profit.

But it is in absence that there is usefulness.

An absence of speech versus a closed mouth. Very different images to me. Both could lead to less interference and therefore an opening of the mind. So a closed mouth might make sense, but it is not the best representation for openness. I guess that is what makes the above a Zen Sarcasm list.