【摘要】：In contemporary thinking, "reason" has become synonymous with "correctness" to the extent that it is even capable of prescribing laws to nature. Ancient philosophers, including Plato and Cicero, offered a holistic, profound, and clear understanding of its connotations. As a symbol that distinguishes humans from animals and the requisite means or tools for seeking the truth, reason is characterized by both divinity and nobility. It also maintains a degree of neutrality, with the right use of reason as the key to determining its nature. In essence, reason is a type of calculation that can be used to do either good or evil. Hence, it must be supplemented by divinity and virtue. As a cognitive faculty, to reason is to perceive one's own limits and practice moderation, temperance, and prudence, thus maintaining a full grasp of the world and becoming a useful being.