Okay, so. This one isn't quite as clear as it seems in English I think. I left the google translation as it was, because it was one possible version, but the original French goes as follows: Avec cela, j'ai une juste cause d'affliction, qui m'est sensible jusqu'au fond du cœur; elle ne vient point d'ici, mais d'autre part; - the "not from the heart" is one possible interpretation of the "d'ici" phrase I'd say, but you don't have to read it that way, because "ici" can mean a lot of things and it's unclear if it's actually related to "coeur". He could even be talking geography and saying his affliction doesn't come from Berlin but from somewhere else! Which would fit your theory.
Okay, so, based on my reading of Fritz's correspondence, where this theme crops up over and over again, I'm 99% sure he's referring to Stoicism here.
Ohhhh. Nice. I definitely read his "moralize" in the second letter that way, but because he also has the heroism part in the first letter - which I took to mean just that, stoically withstanding things - I took the "morality" part more literally in that case, precisely because he's being so cryptic and seems worried that Camas might disapprove - and "worried for a sick friend" seems like something that Camas wouldn't object to or even fail to understand and sympathize with, unless the source of the illness is the problem - or the identity of the friend, as per your theory. Hmmm.
Re: Fritz Mystery Affliction January 1736
Okay, so. This one isn't quite as clear as it seems in English I think. I left the google translation as it was, because it was one possible version, but the original French goes as follows: Avec cela, j'ai une juste cause d'affliction, qui m'est sensible jusqu'au fond du cœur; elle ne vient point d'ici, mais d'autre part; - the "not from the heart" is one possible interpretation of the "d'ici" phrase I'd say, but you don't have to read it that way, because "ici" can mean a lot of things and it's unclear if it's actually related to "coeur". He could even be talking geography and saying his affliction doesn't come from Berlin but from somewhere else! Which would fit your theory.
Okay, so, based on my reading of Fritz's correspondence, where this theme crops up over and over again, I'm 99% sure he's referring to Stoicism here.
Ohhhh. Nice. I definitely read his "moralize" in the second letter that way, but because he also has the heroism part in the first letter - which I took to mean just that, stoically withstanding things - I took the "morality" part more literally in that case, precisely because he's being so cryptic and seems worried that Camas might disapprove - and "worried for a sick friend" seems like something that Camas wouldn't object to or even fail to understand and sympathize with, unless the source of the illness is the problem - or the identity of the friend, as per your theory. Hmmm.