A dialogue between Ryan (admin) and Aleksey (author of ‘Principles of Typology’):
Aleksey: Marx – When he did not hold a job and was supported by Engels led a very non-structured lifestyle and showed few if any tendencies towards an attempt to establish a clear-cut organized schedule. I’d say INTP, not INTJ.
Ryan: I think that dispassionate analysis is very much an INTP thing, whereas willful analysis is more of an INJ thing. (Schopenhauer’s ‘The Will’, Nietzsche’s ‘Will to Power’, Hegel’s ‘Will to the Absolute Idea’, Marx’s will to the destined Communist phase of history. The contrast is the dispassionate will-less analysis of the NTP.
INJs generally have a strong will and operate by waves and impulses whereas Ti (for NTPs) is more constant. As such, it is easier for Ti dominants, especially neurotic, schizoid/schizotypal INTPs, to adopt a certain regimentum in their daily lives whereas INTJs are liable to be governed by shifting moods.
Marx seems to be to be very Will-ful. Take, for example, his belief in his own historical prophecies: In ‘Das Capital’, Marx prophetizes that captialistic society must collapse upon itself due to the unrestrained exploitation of the proletariat. This exploitation, he says, will only increase until the workers revolt and install a communist society.
Towards the end of his life, Marx saw that the exploitation of the workers was actually beginning to lessen. – Capitalist democracies have the power to slowly amend themselves. In Europe today, for example, there are very strict laws concerning minimum wages, maximum work hours and prohibitions of child labour.
The very thing Marx had thought impossible was beginning to happen, even in his own lifetime. But this did not lead him to accept that his theory was wrong as he was strong-willed, with no inclination for dispassionate analysis.
Aleksey: As a general rule, Ni does tend to be impulsive and Ti consistent for the reasons that you mentioned. However, your inquiry appears to overlook the distinction between external and internal world activity. Ni people tend to appear put together and organized because their leading extroverted function is much more similar to Ti than to Ni on the account that it is a judging faculty rather than a perceiving one.
You cite interesting biographical facts about Marx where he appeared to be guided more by steadfast amorphous hunches rather than by dispassionate analysis. Certainly nothing and no one was forcing him to behave in this way, hence, it would be a reasonable conjecture that he behaved in a way that was the most natural to him. I will concede the point here. INTJ.