From little that I know about his actual human-nature, I think he may be either an INFP, INTP, or ENTP, what do you think?
Is it that by its indefiniteness it shadows forth the heartless voids and immensities of the universe, and thus stabs us from behind with the thought of annihilation, when beholding the white depths of the milky way?
I wonder if Dostoevsky read Poe's "William Wilson" ( inspired by Washington Irving ) and was, in turn, inspired by it before writing the Kafka-like story "The Double" ? I suppose Jung could have had a field day with all the "Shadow as Doppelganger" stuff going on.
"The people can always be brought to the bidding of the leaders. That is easy. All you have to do is tell them that they are being attacked and denounce the peacemakers for lack of patriotism, and exposing the country to danger. It works the same in any country."
Reichsfuhrer Herman Goering at the Nuremburg trials.
INTP for sure. Most his stories that I've read were prototypically INTP; they explored the logical possiblities and logical nature of how something worked or how a series of events transpired. He is almost portrayed as this dark INFP or INFJ, but I was shocked that his works I read didn't reflect that at all. Unless he became an INFP as he grew older and I was reading earlier works, there is no doubt in my mind about INTP.