Leonardo Da Vinci's Last Supper when drawing boards was a big problem:
Must have good form and bad form of Jesus, Judas, one of the friends of Jesus when decided to betray him. He left up half of all to find his ideal model.
Once in a ceremony, complete picture of Christ in Youth’s face found.
Da Vinci invited Young and harvesting plans.

Three years passed.
The Last Supper painting was almost finished but still Da Vinci didn’t find a suitable model of Judas. Cardinal in charge of the little church that pushes all the graffiti that earlier.
Painter days after the search, the young broken rags found bun in atmospheric water. Trouble of associates asked him to bring the church, another chance to go because he did not plan to remove.
Beggars who just do not understand what's brought to the church, his aides had prop in the same situation Vinci lines impiety, sin and selfishness that good roles were closed on its face, to copy.
When his work was all beggars, the other pale head was a little drunk, opened his eyes and saw the painting before eruption, and with a combination of surprise and sadness: "I've seen these boards already!
Da Vinci surprised asked:

“Where?”
Pauper said: "Three years ago, before everything I miss. When singing in a Choir sang, I had a dream filled life, the artist was invited to become the model of Jesus Painting, but now…!