In "Night", what message is Wiesel giving readers through his example of Juliek and his violin?

Juliek
represents the death of a nightingale.  This is something that I think takes a bit of
reorientation, but it seems to me that Juliek is a symbol of a part of the European intellectual
tradition.  Throughout European thought, theor symbol of the nightingale has been present. 
Thinkers have always aspired to the realm of the nightingale, whose song represents purity,
truth, beauty, and an artistic expression of all that is good in the world.  When Keats writes
about it in his Ode, he is...