A man is driving home late at night and his car breaks down, so he walks to the nearest building and knocks on the door. Turns out it's a monastery, and he tells the monk who opens the door that he's stranded. The monk says no problem, we'll fix your car and you can stay here. So the man goes to sleep only to wake up to the most beautiful, indescribable noise he's ever heard. He can't figure out what it is so he goes to sleep, but the next morning he asks the prior what the noise was. The prior says, "I can't tell you, you're not a monk." The man leaves. The next year, the man is driving along the same road at the same time and his car breaks down, so he heads to the monastery and they put him up. Again, he wakes up to the beautiful noise. This time he's determined to find out what it is, so the next morning, he asks the prior what the noise is. Again, the prior says, "I can't tell you, you're not a monk." The man says, "Fine! What do I have to do to become a monk?" The prior tells him, "Count all the blades of grass on the planet." The man leaves, and seven years later, he returns. "There are 900,678,550,654,347,987 blades of grass on the planet. Now can I know what the noise is?" The monk leads him to a room with a wooden door and takes a ring of keys from the wall. He unlocks the wooden door with a wooden key and they come to another door, this one of pewter, which the monk unlocks with a pewter key. The doors and keys get progressively more beautiful and the man can hear the noise when they come to a door made of the most beautiful substance he's ever seen. The sound is stronger now and the man can barely contain himself. The monk unlocks it and the man finally sees what makes the exquisite noise. Do you want to know what it is? I can't tell you, you're not a monk.