Passage: While the riots were not initiated by Prime Minister William Pitt's administration, the national government was slow to respond to the Dissenters' pleas for help. Local Birmingham officials seem to have been involved in the planning of the riots, and they were later reluctant to prosecute any ringleaders. Industrialist James Watt wrote that the riots "divided [Birmingham] into two parties who hate one another mortally". Those who had been attacked gradually left, leaving Birmingham a more conservative city than it had been throughout the eighteenth century.

Question: Who wrote about the rioting being a dividing factor within Birmingham?
James Watt