Touching the question of God's simpliciity, whatever is perfectly infinite in being cannot be built up from that which is finite in being. But parts of a thing must necessarily be finite. (James E. Dolezal, All that is in God, 48)
If God should be composed of parts, then these parts would be before Him in being, even if not in time, and He would rightly conceived of as existing from them, or of them. (Dolezal, 49)
In response to the first argument, it is not true that parts of a thing must necessarily be finite. It is mathematically possible to create a composite equation consisting of both finite and infinite components (And yes, parts CAN be infinite). In response to the second argument, why can it not be that the whole is prior logically, and the parts are discerned only when the whole is dissected? For example, a multi-dimensional tesseract is prior to the cube, since a cube is a 3-dimensional face of a n-dimensional tessarect. The tessarect is primary, yet we can break it down into 3-dimensional cubes for viewing, or even 2 dimensional squares. Therefore, this argument of priority is not sound.
May I suggest that Dolezal might benefit from actually learning mathematics (at the higher level) and science (also at the higher level), before making such arguments?