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CHAP. IX. conducted his speculations in the footsteps of the Casuists. The whole field of ethical science was thus left at the exclusive command of the writers who followed Grotius; and it still exhibits in an extraordinary degree the traces of that entanglement with Roman law which is sometimes imputed as a fault, and sometimes the highest of its recommendations, to the Grotian theory. Many inquirers since Grotius's day have modified his principles, and many, of course, since the rise of the Critical Philosophy, have quite deserted them; but even those who have departed most widely from his fundamental assumptions have inherited much of his method of statement, of his train of thought, and of his mode of illustration; and these have little meaning and no point to the person ignorant of Roman jurisprudence."

I have already said that, with the exception of the physical sciences, there is no walk of knowledge which has been so slightly affected by Roman law as Metaphysics. The reason is that discussion on metaphysical subjects has always been conducted in Greek, first in pure Greek, and afterwards in a dialect of Latin expressly constructed to give expression to Greek conceptions. The modern languages have only been fitted to metaphysical inquiries by adopting this Latin dialect, or by imitating the process which was originally followed in its formation. The source of the phraseology which has been always employed