Conversation so far:
What did Stephen Sondheim do in Stephen Sondheim's early years?
When he lived in New York, Sondheim attended ECFS, the Ethical Culture Fieldston School known simply as "Fieldston..
When did he graduate?
He later attended the New York Military Academy and George School, a private Quaker preparatory school in Bucks County, Pennsylvania.
Did he join the military?
He later attended the New York Military Academy.
Are there any other interesting aspects about this article?
Sondheim detested his mother, who was said to be psychologically abusive and projected her anger from her failed marriage on her son.
Did his mother abuse him?
What she did for five years was treat me like dirt, but come on to me at the same time.

Question: Where was his father?
Self-contained rewrite: Where was Stephen Sondheim's father?