It's a mixture of philosophy, psychology, mysticism, literature... And it is a great way of teaching/learning, when one does this the person who asked the question and also answered it, would be hit with a realization which seems to be the truth of that person, the more this realization hits you the more you know/rise into different dimensions of reality/life. It's a blissful experience to have. The teacher's job is to simply ask the right questions (that the student can't ask bcz of lack of clarity) and lead the student to what they want to find.