1, Confucius said: "A gentleman is not a tool". My understanding is not free and easy, but emphasizes the usefulness of gentlemen.

2. Metaphysical refers to the Tao and physical refers to the device. A gentleman pursues the body of Tao, not the use of tools.

3. Confucius' benevolence is the noumenon of Tao. A gentleman is not a tool, but a gentleman who has mastered the body of Tao. He will not be limited to one tool and one use, but will be able to touch many devices and use them.