This sentence means that if you forgive others with a heart that forgives yourself, your friendship will be deeper; if you blame yourself with a heart that blames others, you will make fewer mistakes.

If you blame yourself with the intention of blaming others, you will have few faults; if you forgive others with the intention of forgiving yourself, you will make all the mistakes. Similar sources include "Zengguang Xianwen", "Xingxin Miscellanies", "Aphorisms Lianbi? Hold Gong Lei", etc.

There is a sentence in "Xingxinlu" written by Lin Bu of the Song Dynasty: "If you blame yourself with the same intention of blaming others, you will have few faults; if you forgive others with the intention of forgiving yourself, you will make mistakes." Meaning: When you make mistakes When discovered, basically human nature is to shift the blame onto others. Even if it is clear that it was our fault, we will still find many good reasons to forgive ourselves. Therefore, when advising people to improve their self-cultivation, it is recommended to be strict with oneself and to be lenient towards others.

When a mistake is discovered, human nature basically shirks the responsibility to others. Even if it is clearly our own mistake, we will still find many good reasons to forgive ourselves, so we advise others to improve their self-cultivation. At that time, it was suggested to be strict with oneself and to be lenient towards others.