"Touching the category and comprehending by analogy" means that after mastering the laws or knowledge of one thing, one can use it as a basis to infer and understand things of the same kind or related to it. Its core lies in emphasizing the learning ability to draw inferences from one instance and transfer knowledge flexibly. This idiom originates from "Yin Er Shen Zhi, Chu Lei Er Chang Zhi" in the "Xici Shang" chapter of the Book of Changes, reflecting the wisdom in traditional Chinese thought that emphasizes analogy, association, and holistic coherence. In terms of usage, it is often used to describe a person who has strong learning ability and high insight, able to infer the unknown from the known or establish connections across different fields. For example, when someone learns one programming language and can quickly master other languages, this can be called touching the category and comprehending by analogy. This idiom has a clearly positive connotation, expressing appreciation for wisdom and understanding. It encourages people not to rote memorize, but to be good at summarizing patterns and drawing inferences from one instance, thereby improving the efficiency of learning and problem-solving. In terms of cultural background, it reflects the philosophical pursuit of "one thread running through it all" in Confucianism and "the Dao penetrates all as one" in Daoism, emphasizing that all things are interconnected and that principle is one while its manifestations are many.
📝 Example
1. He was proficient in mathematics, so when he studied physics, he could comprehend by analogy and quickly understood the complex formulas of mechanics. (Referring to extending mathematical knowledge to physics and grasping related principles.)
2. After mastering basic painting techniques, she could comprehend by analogy, and even made rapid progress in calligraphy and design. (Referring to transferring the aesthetics and techniques of painting to other artistic fields.)