This sentence comes from a famous saying by gradually Feng Zikai. The full text is:
Take the right path, put down your careless hands, make good friends, break unjust friends, drink clean tea, abstain from drinking wine, open the door to convenience and shut up the mouth of right and wrong. The heart is smaller than everything, and the heart is bigger than everything in the world; Invisible love for the beauty of the world; Talk about things in the world; Look at the world from the bottom of my heart; Pay attention to the changes in the world. Not confused, not trapped in love.
Not afraid of the future, not thinking about the past. So safe. It's hard to see big things; Adversity and prosperity look at the mind; Whether you are happy or angry depends on self-restraint; Only by giving up can you see wisdom; Success or failure depends on persistence.
Revelation:
In this vast world, people are all kinds and different, but rich and powerful people may not be able to attach importance to feelings and righteousness, and sweet-talking people may not be sincere. Don't care too much about such people. You know, you are tolerant, he thinks you are afraid of things, you are kind, he thinks you are cowardly, so he will push his luck.
If you live your whole life, you should be a person who values feelings and righteousness. Don't cheat, take advantage of others and play tricks on others. You can stab me in the back, but not in the back.