The meaning of social relationship shall be clearer if we draw a distinction between physical and social relation. The relationship between pen and ink, earth and sun, a book and bookshelf, fire and wood is physical relationship because these physical objects do not have any reciprocal awareness what so ever. On the other hand, the social relations exist between the mother and the child, the teacher and the thought are determined by reciprocal awareness. Without this awareness, there can be no social relationship, and therefore no society.