Conversation so far:
Where was Allan Bloom born?
Allan Bloom was born in Indianapolis, Indiana.
What was Allan Bloom's family like?
His parents were both second-generation Jewish parents who were both social workers.
Did Allan Bloom have any brothers or sisters?
He had a sister named Lucille.
Where did Allan Bloom go to school?
He enrolled into the University of Chicago's humanities program for gifted students.

Question: What did he study?
Self-contained rewrite: What did Allan Bloom study?