in nature the IDEA is in the form of externalization
the IDEA is the activity of OPPOSING itself TO itself in order to be FOR itself and solely BY itself in this other.
So the science falls into three parts:
I. Logic, ie., the science of the IDEA in and for itself,
II. Phil. of nature as the science of the IDEA in its OTHERNESS,
III. Phil. of spirit as the idea returning BACK to itself from its otherness.