According to a United States court ruling, Intelligent Design (ID) theory is religious in nature, not scientific, and must not be taught in schools. In opposition, Fuller argues for a closer rapport between science and religion. Here it is emphasized that any allegedly scientific conclusion from design in Nature to the existence of God is a hypothesis subject to the same quality norms as empirical hypotheses in general. By quotations from his Iter Lapponicum, Linnæus is summoned in support of a strictly immanent conception of science, against Fuller’s suggestion that Linnæus’ personal piety could be reason for considering ID scientific.