There are many!

1. Among all moral qualities, good nature is the most needed in the world. -- (British) Russell

2. People are good, and there are many good things but not enough. --(Song Dynasty) Yang Wanli

3. People who do good deeds should feel happy. --(France) Romain Rolland 4. Kindness and moral character are both like gems and metals. The two set off each other and add brilliance. --(UK) Bernard Shaw

5. Kindness is a universal language that can make blind people feel it and deaf people smell it. --(US) Mark Twain

6. Kindness is the golden chain that connects society.

7. A kind heart is better than a noble status.

8. The most beautiful music of the soul is kindness! --(France) Romain Rolland

9. Be a kind person and seek happiness for mankind. (Russian) Gorky

10. Kindness is not a science, but a behavior. --(France) Romain Rolland

11. Goodness is the sunshine of the spiritual world. (Dharma) Victor Hugo

12. Treating people with truthfulness is not only beneficial to them, but also beneficial. -- Yang Jian

13 In order to govern the people in peace, one must not be good at etiquette. -- "The Classic of Filial Piety"

14. Punish evil and encourage good. --Zuo Zhuan

Others include:

Be hard on yourself and be kind to others.

Be strict with yourself and be lenient with others.

Treat others with the spring breeze and treat yourself with the cold wind.

Giving roses to others will leave a lingering fragrance in your hands

Being kind to others is to be kind to yourself

Those who love others will always be loved