Conversation so far:
who said to every action there is a reaction
Sir Isaac Newton's third law is, For every action, there is an equal and opposite reaction.
in what era did Sir Isaac Newton become renowned
English physicist and mathematician Sir Isaac Newton was the culminating figure of the Scientific Revolution of the 17th century
where did sir isaac newton go to school
Sir Isaac Newton attended Trinity College Cambridge
why did sir isaac newton resist publishing his work
Sir Isaac Newton's overwhelming fear of criticism caused him to resist immediate publication of his work.

Question: when did the physicist have a nervous breakdown
Self-contained rewrite: when did sir isaac newton have a nervous breakdown