Assent to a probable proposition; an attitude of a mind inclining to one of two contradictory propositions, but without definitely excluding the other. If the motives in favor of one alternative clearly outweigh those on the other side, the mind tends in the direction of the former; but since these motives do not exclude all reasonable anxiety as to the possibility of error, the adhesion of the mind is not perfectly secure. If this assent be given only after a mature consideration and comparison of the motives, the opinion is prudent; assent to a probable proposition without sufficient deliberation is termed rash.

Bibliography Information
Entry for 'Opinion'. 1910 New Catholic Dictionary. https://www.studylight.org/dictionaries/eng/ncd/o/opinion.html. 1910.

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1910 New Catholic Dictionary

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Opinion