Therefore however abundant knowledge of truth may be, it is not evil but good. Now the desire of good is not sinful. Therefore the vice of curiosity cannot be about the intellective knowledge of truth.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic curiosity vice
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/18755/pg18755-images.html

Context

“7:17, "He hath given me the true knowledge of things that are, to know the disposition of the whole world, and the virtues of the elements," etc. Again, by knowing the truth man is likened to God, since "all things are naked and open to His eyes" (Heb. 4:13) , and "the Lord is a God of all knowledge" (1 Kings 2:3). Therefore however abundant knowledge of truth may be, it is not evil but good. Now the desire of good is not sinful. Therefore the vice of curiosity cannot be about the intellective knowledge of truth. Obj. 3: Further, if the vice of curiosity can be about any kind of intellective knowledge, it would be chiefly about the philosophical sciences. But, seemingly, there is no sin in being intent on them: for Jerome says (Super Daniel 1:8) : "Those who refused to partake of the king's meat and wine, lest they should be defiled, if they had considered the wisdom and teaching of the Babylonians to be sinful, would never have consented to learn that which was unlawful": and Augustine says (De Doctr.” source