What is juliek's main fear?

Juliek's main fear in Elie Wiesel's "Night" is the loss of his individuality and humanity amidst the dehumanizing conditions of the concentration camps. He is terrified of being reduced to a mere number or a faceless victim, which is symbolized by his desperate need to play his violin, a representation of his identity and spirit. This fear underscores the struggle to maintain one's essence in the face of overwhelming brutality and despair.