Be cautious and independent, guard your own heart, be clear-headed, and self-denial with the hearts of others.

Integrity is: self-denial, self-control, self-control, self-defense and understanding. Self-denial with the heart of others and tolerance with the heart of tolerance. From the golden mean.

A gentleman is cautious and independent, does not deceive the darkroom, and is modest and self-grazing, including Zhang Kejian. A gentleman stands between heaven and earth. He wants to raise heaven and earth to be upright, do aboveboard things, be self-denying, be cautious and independent, be open-minded, be self-denying and be kind to others, and be tolerant and kind to others.

It means that when a gentleman is alone, even if others can't see or hear, he should be cautious, don't do anything that violates moral laws, live up to his conscience, don't cheat his heart, be eclectic and be strict with himself.

Cautious and independent interpretation;

Caution and independence indicate an attitude towards life, which is consistent in appearance; It shows a realm of life, honesty. In the history of our country, there are many gentlemen who uphold this kind of ethics: for example, Yang Zhen in the Eastern Han Dynasty "knows heaven and earth, knows you and me" and refuses to be polite; During the Three Kingdoms period, Liu Bei "did not do it because of small evils and did not do it because of small goodness".

In the Song Dynasty, Yuan Cai "deserved to live in his heart"; In the Yuan Dynasty, Xu Heng did not eat pears without owners, because "although pears have no owners, my heart has owners"; Ye Cunren's "fear of others and knowing oneself" in Qing Dynasty all reflected his self-discipline and pursuit of moral perfection.