Conversation so far:
Can you provide some background information on Irving Fisher?
Fisher was born in Saugerties, New York. His father was a teacher and a Congregational minister, who raised his son to believe he must be a useful member of society
Was Irving Fisher married?
In 1893, he married Margaret Hazard, a granddaughter of Rhode Island industrialist and social reformer Rowland G. Hazard.
What kind of work did Irving Fisher do?
From 1890 onward, he remained at Yale, first as a tutor, then after 1898 as a professor of political economy, and after 1935 as professor emeritus
How well did Irving Fisher tutor students in math?
His father died, at age 53. Irving then supported his mother, brother, and himself, mainly by tutoring.

Question: How did he do as a professor?
Self-contained rewrite: How did Irving Fisher do as a professor at Yale?