The poem of Father William is what

a conversation between a wise father and his conceited son

Explanation:

The men and women are separated, and eliezer sees his mother and sisters vanishing in the distance. he holds onto his father and is determined not to lose him. a fellow prisoner tells eliezer to say that he is eighteen (though he is really fourteen) and that his father is forty (though he is fifty). the prisoners who have been at auschwitz for awhile are brutal and cruel to the new arrivals, and one of them tells them about the crematory. some of the young men talk about revolting but are silenced by their elders. then, everyone is forced to march past ss officer  dr. mengele