15. A leech has two daughters, and both are named “Give me!”There are four things that are never satisfied:
16. the world of the dead,a woman without children,dry ground that needs rain,and a fire burning out of control.
17. Those who make fun of their father or despise their mother in her old age ought to be eaten by vultures or have their eyes picked out by wild ravens.
18. There are four things that are too mysterious for me to understand:
19. an eagle flying in the sky,a snake moving on a rock,a ship finding its way over the sea,and a man and a woman falling in love.