Complex sentence: Nous itself behaves as a mobile tumor, it will burrow into the skin and then produce a number of tumors, the tumors then need to be removed in the order they were made, before doing the same to Nous itself.
Split into simpler sentences: Nous itself behaves as a mobile tumor, it will burrow into the skin and then produce a number of tumors. The tumors then need to be removed in the order they were made, before doing the same to Nous itself.