I have a good buddy who also is INTP. We have long and deep conversations about everything. We disagree with most topics (except human nature), but we always consider the others view point...an exchange of ideas is what is important! He's read the Bible several times and know's it inside and out...I go to him for spiritual advice and the big picture (purpose, compassion, life after death). He comes to me about challenges that happen in our daily lives (goals, difficult people, finance,etc.).
The mind of the INTJ. Very active, insomniac, OCD (emphasis-obsessed), narcissist, calculating, methodical, unconventional, skeptical, vindictive, awkward-socially, conviction, creative, reliable, improvement seeking, focused,etc...the list goes on. I'm sure this information is hardly new to most INTJ's...they seek introspection at an early age.