The Tree with its trunk, branches, foliage, and roots is the direct representation of the Man. The Man as the Tree is a child of Heaven, when he is Thinker, and of the Earth, when he is 

The Tree with its trunk, branches, foliage, and roots is the direct representation of the Man. The Man as the Tree is a child of Heaven, when he is Thinker, and of the Earth, when he is Producer, and is Synthesis of both, intersection Point and connection Key between all that is below with all that is at the top.