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It's well documented that Newton had multiple nervous breakdowns in his life including a year long one.[1] [1]http://www.newtonproject.ox.ac.uk/his-personal-li

• scottlocklin 7y ago
  And ... ? That doesn't mean he lost his marbles because of stress or long hours. More likely he lost his marbles for the same reason bodybuilders and professional strong men (two more classes of lazy over achievers) are more prone to shoulder injury than people who play the trombone. Look, I clicked on your profile and know where you're coming from: you were in the military. I used to be a cop. People with this sort of background pride themselves on being able to deal with extreme stress which would paralyze most people. It's a useful superpower, but it is not useful to be this lit up all the time; you have to relax at some point.