between Nature and Person, that is, οὐσία and ὑπόστασις. The exact terms which should be applied in each case must be left to the decision of ecclesiastical usage. For the time being let that distinction between Nature and Person hold which I have affirmed, viz. that Nature is the specific property of any substance, and Person the individual substance of a rational nature. Nestorius affirmed that in Christ Person was twofold, being led astray by the false notion that Person may be applied to