But no man, save a fool, ever makes choice of being the equal of an angel, still less of God; because choice regards only things which are possible, regarding which one takes deliberation.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic choice God
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/17611/pg17611-images.html

Context

“If, therefore, the angel desired to be as God, not by equality, but by likeness, it would seem that he did not thereby sin. Obj. 3: Further, the angel was created with greater fulness of wisdom than man. But no man, save a fool, ever makes choice of being the equal of an angel, still less of God; because choice regards only things which are possible, regarding which one takes deliberation. Therefore much less did the angel sin by desiring to be as God. On the contrary, It is said, in the person of the devil (Isa. 14:13, 14) , "I will ascend into heaven . . . I will be like the Most High."” source