what would you look for as signs in a philosopher that he is an intj or an intp? like zizek and derrida and people who are always changing the signs in their systems would be more likely to be intps (Ti Ne), and gruff tyrannical proto-fascist heideggers, nietzsches, etc would be intjs (Ni Te)? more conceptual vs more systematic? is marx an intj? hegel?
what do you think wittgenstein was? i change my take and go with infj too. his entire life story is never feeling at home in the world. and he was a mystic at heart who hated systematic philosophy. he was poetic. "our language is like an ancient city..."
Yes, I agree Wittgenstein was INFJ. There's an interesting book that details his behavior and its influence on his philosophy. Here's the link: Amazon.com: Autism and Creativity: Is There a Link between Autism in Men and Exceptional Ability?: Mich Fitzgerald: Books
Although, I'm curious why you said INFP. Could you explain?