The only way you should be typing him with is his cognitive functions, not that you need to exclude his character and personality altogether, but functions should be the major role of any type analysis.

Luckily for you, even with your reliance on stereotypes and weak evidence, Jung is an INFJ. This is because of his function order though. Clearly an Ni dominant. Clearly preferred Ti over Te. Ergo… INFJ.

JF: Have you concluded what psychological type you are yourself?

Jung: (chuckling) Naturally I have devoted a great deal of attention to that painful question, you know.

JR: And reached a conclusion?

Jung: Well, you see, the type is nothing static. It changes in the course of life. But I most certainly was characterized by thinking. I overthought from early childhood on. And I had a great deal of intuition, too. And I had definite difficulty with feeling. And my relation to reality was not particularly brilliant. I was often at variance with the reality of things. Now that gives you all the necessary data for the diagnosis.

On the other side, Jung notes, in the introduction to Psychological Types, that, in his pre-1920 work on types, he “identified the thinking type with the introvert and the feeling type with the extravert” — which seems to me to be a mistake that an INTJ would be prone to and an INFJ would not.

Maybe more significantly, see this page and this page.

Right now, I’d have to say, I’m somewhere between INFJ and INFP.

His writing is often less-than-enjoyable for me to read, due to what I would deem odd and inconsistent word choice, which, I have found, often tends to be the case when I read the thoughts of intelligent INFPs on a typology forum I frequent.

I also think Elaine made an interesting argument as to his possibly being an INFP, but, like some of the arguments I provided in my comment, the evidence could also point to INFJ…

I actually remembered one additional anecdote I read recently, in a summary of Jung’s ‘The Red Book’ on Amazon.

Apparently, in the years leading up to World War I, Jung was having recurring nightmares and visions of impending disaster and chaos. He thought he was going insane, and so decided to record his suspected descent into madness on paper (which, I believe, forms the basis of much of ‘The Red Book’) but then WWI broke out, and Jung came to believe that he had actually been intuiting the impending war.

That sounds a lot like an Ni vision foretelling the future, if you ask me…

I’ll continue to keep my eyes and ears open, and let you know of any other interesting evidence I may come across (for whichever type).