76. Therefore, brethren, likeness of nature can be attacked by no cavil, and the Son cannot be said to lack the true qualities of the Father’s nature because He is like Him. No real likeness exists where there is no equality of nature, and equality of nature cannot exist unless it imply unity, not unity of person but of kind. It is right to believe, religious to feel, and wholesome to confess, that we do not deny that the substance of the Father and the Son is one because it is similar, and that it is similar because they are one.
50576. Homoeusion recte dici posse.---Caret igitur, Fratres, similitudo naturae contumeliae suspicione: nec potest videri Filius idcirco in proprietate paternae naturae non esse, quia similis est: cum similitudo nulla sit, nisi ex aequalitate naturae; aequalitas autem naturae non potest esse, nisi una sit; una vero non personae unitate, sed generis. Haec fides pia est, haec conscientia religiosa, hic salutaris sermo est, unam substantiam Patris et Filii idcirco non negare, 0530B quia similis est: similem vero ob id praedicare, quia unum sunt.