"In order that the whole of faith not be attributed to human power and wisdom but to God, God willed that the primitive teaching of the apostles should be in weakness and simplicity, to which afterwards, however, worldly power and wisdom being added, he shows through the victory of faith that the world is subject to God both in power and in wisdom [(Ut tamen totum quod est fidei non humanae potentiae aut sapientiae tribueretur, sed Deo, voluit Deus ut primitiva apostolorum praedicatio esset in infirmitate et simplicitate, cui tamen postea potentia et saecularis sapientia superveniens ostendit per victoriam fidei mundum esse Deo subiectum et quantum ad potentiam et quantum ad sapientiam)]."
Thomas Aquinas, Expositio super librum Boethii De Trinitate, pars 1 q. 2 a. 3 ad 1, as translated by Ralph McInerny (Thomas Aquinas: selected writings, ed. and trans. with an introduction and notes by Ralph McInerny (London: Penguin Books, 1998), 137), italics mine. The Latin is taken from the Leiden (i.e. Brill) edition of 1959, ed. Bruno Decker, as reproduced in Corpus Thomisticum here: http://www.corpusthomisticum.org/cbt.html#84432.