Complex sentence: With him God is the supreme being, one and indivisible though called by many names, accessible to reason alone; but as animals form the intermediate stage between plants and human beings, so there exist intermediaries between God and man, viz.
Split into simpler sentences: With him God is the supreme being, one and indivisible though called by many names, accessible to reason alone. As animals form the intermediate stage between plants and human beings, so there exist intermediaries between God and man, viz.