1. Narrow-minded people will not be happy. The simplest definition of narrow-minded is that they focus too much on personal interests and cannot tolerate the interests of others. ——Leo Tolstoy

2. No matter who tells a lie, he will lose his pure heart, and such a person cannot make a clean bowl of vegetable soup. ——Beethoven

3. Hypocritical sincerity is more terrifying than the devil. ——Tagore

4. How you want others to treat you is how you should treat others.

——Marx