Kohler meditates on windows of various sorts throughout the book 's sixth section . Kohler continues to reflect on his colleagues , his teacher Meg , his family life and his professional work on the Holocaust . A subsection , titled " Blackboard , " contains Kohler 's thoughts on classrooms , teaching , and students . Another subsection , " Kristallnacht " recalls Kohler 's time in Germany as a student - he was present during the Kristallnacht , but his participation in the actual event is ambiguous
Kristallnacht
Kristallnacht
The Tunnel (novel)