When a thing can be accomplished by one means, but in different ways, doubt may arise, just as when it can be accomplished by several means
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic doubt meaning
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/17897/pg17897-images.html

Context

“Consequently when the judgment or decision is evident without inquiry, there is no need for the inquiry of counsel. Reply Obj. 2: In matters that are evident, the reason makes no inquiry, but judges at once. Consequently there is no need of counsel in all that is done by reason. Reply Obj. 3: When a thing can be accomplished by one means, but in different ways, doubt may arise, just as when it can be accomplished by several means: hence the need of counsel. But when not only the means, but also the way of using the means, is fixed, then there is no need of counsel. ________________________ FIFTH ARTICLE [I-II, Q. 14, Art. 5]” source