Just out of curiosity, would you INTJs say you agree with this? (from this page):
...the INTP has a definite thirst for universal, underlying knowledge. Unlike the INTJ who seeks to understand their environment in order to get a foothold on it, the INTP seeks to understand the principles behind the environment in order to get a foothold on their understanding of it. The INTJ seeks knowledge as a means to an end, being whatever goal they’ve decided they need to accomplish in the outside world, while the INTP seeks knowledge for its own sake, so that they can better understand the theoretical principles running the universe. In this way the INTJ is more materialistic while the INTP is more metaphysical. The INTJ wants to grasp an idea in their hands and use it as a tool, to substantiate it or manifest it in reality, while the INTP doesn’t care as much if this happens, seeing as reality is a world of appearances, and they are interested in the underlying truths behind it. INTPs search for dispassionate knowledge, separate from emotional baggage or unessential appearances. This is why the INTP is perceived as very ponderous, because they often are. They prefer the thinking over the actual doing, and they may even struggle with sticking with a project long enough for it to fully mature in reality, due to the thirst of their Ne for more and more possibilities over complete ones.