Jeongjae suggests that including both, unified views of the world and human, through dichotomy relative structure. He also shows a unique educational Methodology to reach having mature personality as these unified views of the world and human.
His view of learning places kyunghak(經學) and yehak(禮學) on the principal, and the others like system, history and literature on the bottom. Especially, for the learning of principal, it gets count on the deepening process of knowledge through careful reading and deep thinking, and the extending process of enlightenment through recognition and appreciation of the meaning. So, he sets much by reading among meaning, practice and reading of three requisites for learning. Therefore he emphasize on the reading method to find the deep meaning from the inside and to get by experience more than fast reading or wide reading. And he lays weight on the learning method according to the frame and character of kyunghak.
Jeongjae is looking for the methodology of moral culture from inside human spirit. From this, the true form of spirit is originally faithful, but sometimes unconsciousness, and action of spirit is fundamentally virtuous, but easily falls into devil, so that he suggests kyung for the means to overcome reality. So he attaches importance to jojon(操存), bangi反己), and introspection as specific means for mental culture. And he emphasize the importance of the way of moral culture turned from its' inside toward outside. It's not the fundamental way, but the way starting from bottom to essence, that can be experience and realistic practice method.