By the way of generation and movement we must of necessity come to the imperfect before the perfect.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic necessity movement
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/19950/pg19950-images.html

Context

“But this took place while Christ presented a likeness of human weakness, and yet, by means of God's creatures, He showed the power of the Godhead in Himself. Therefore Christ made His birth known, not by Himself, but by means of certain other creatures. Reply Obj. 1: By the way of generation and movement we must of necessity come to the imperfect before the perfect. And therefore Christ was made known first through other creatures, and afterwards He Himself manifested Himself perfectly. Reply Obj. 2: Although hidden wisdom is useless, yet there is no need for a wise man to make himself known at all times, but at a suitable time;” source