A sudden bold and unexpected question doth many times surprise a man and lay him open- Francis Bacon

When Kino goes pearl diving he finds one large oyster. After opening the oyster, he knows he has found something quite special. The villagers begin to  call the pearl, "the pearl of the world", and soon a lot of people know of the great discovery. All of the fame makes Kino become a little greedy. When he is asked "the unexpected question" of what he will do with his new found wealth he promises a bunch of things. He tells that he will have a proper wedding in the church and send his son to school. At the moment when he is asked he doesn't even know if his son is going to survive the sting.

The pearl starts to go to Kino's head and he begins to get paranoid. He also gets rather greedy. When he tries to sell the pearl in his village he argues that he isn't getting what the pearl is actually worth. He also goes to the extreme killing people over a pearl, but no money is equal to the value of a life. The pearl is turning him into an animal as the book describes him. I was happy when he finally decided to get rid of it like his wife had asked. (He should have been a good husband and listened to the guidance of his wife.) I think that once little Coytito died, Kino had realized what was really important. He first found the pearl after the doctor would not care for Coytito, and now it had lead to the death of his son.