Young Torless

This book was disturbing.  I read it at 19 and it stayed with me.  I didn't read it again until recently.  It's about a boarding school where a gang of boys mentally and physically abuse one of their classmates.  At the beginning, Torless is just like them but then he gradually gains a conscience.  The book also explores philosophical thought and mathematics.  The author was later to seek exile in Switzerland because of World War II.  This isn't his biggest achievement.  It's a massive book called The Man without Qualities which someday I will read.  I also need to rewatch the movie which made it into the Criterion collection.