However, it was commensurate with the spirit of their times and sometimes misleads subtle minds even now to annul essential and utterly irreconcilab differences in principle by trying to convert them into a dispute about words, and thus seemingly to contrive unity of the concept merely under different designations; and this commonly applies to cases where the unificati of heterogeneous bases lies so deep or so high, or would require so complete a transformation of the doctrines otherwise assumed in the philosophical system, that people dread to enter deeply into the real difference and prefer to treat it as a disunity in mere formalities.