Don’t get the joke

A drunken man staggers in to a Catholic church, sits down in a confession box and says nothing.
The bewildered priest coughs to attract his attention, but still the man says nothing.
The priest then knocks on the wall three times in a final attempt to get the man to speak.
Finally, the drunk replies: “No use knockin’ mate, there’s no paper in this one either.”
“You tend to get told that the world is the way it is, but life can be much broader once you discover one simple fact; and that is that everything around you that you call life was made up by people no smarter than you … Once you learn that, you’ll never be the same again.”
~ Steve Jobs