8. When you dig a well,you might fall in.When you demolish an old wall,you could be bitten by a snake.
9. When you work in a quarry,stones might fall and crush you.When you chop wood,there is danger with each stroke of your ax.
10. Using a dull ax requires great strength,so sharpen the blade.That’s the value of wisdom;it helps you succeed.
11. If a snake bites before you charm it,what’s the use of being a snake charmer?