1. The value of life is measured by people's contribution to society. -Xiang Jingyu

I have nothing to offer except hard work, tears and sweat. Churchill

God gave life for the prosperity, peace and happiness of mankind. -Kōnosuke Matsushita

If one day I can contribute to my public interest, I will consider myself the happiest person in the world. -Nikolai Gogol

If you want to love your own value, you have to create value for the world. -Goethe

6. The theory that made him devote himself to promoting its early realization will not be affected by the conclusion and destruction of all laws, but will thrive and mature day by day-just like a seed in the soil, it still gives its full grain to human beings regardless of the cold in winter and the drought in summer. Pontopedan

7, peony flowers are so empty, jujube flowers are small and strong. -"enhancement"

8. If we want to make friends, we must first do something for others-things that need time, effort, consideration and dedication. Carnegie

9. People need to have a heart that sacrifices their own selfish interests. -Turgenev

10, you have to remember, always give more to others and take less from others. Gorky

1 1. Sharpening the knife does not mistake the woodcutter, giving the sword a sharp edge. anonymous

12, without the help of selfless maternal love, the child's mind will be a desert. Dickens

13. Buried roots make branches bear fruit without asking for anything in return. Tagore

14, if a person only thinks of himself, then there must be more sad things than happy things in his life. -Ma Ming Sibilia Ke

15, falling red is not heartless, but turning into spring mud protects flowers more. -Gong Zizhen

16, selfish people die first. He lives alone and for himself. If his "I" is damaged, then he can't survive. Ostrovsky

17, history regards those who strive for lofty goals and make themselves noble as great men; Experience praises the person who makes the most people happy as the happiest person. Marx

18, happiness is perfume, you can't pour it on others, but you don't touch it at all. Emerson

19, science has no national boundaries, because it belongs to the wealth of all mankind and is the torch to light up the world, but scholars belong to the motherland. Pasteur

20. Science is by no means a selfish enjoyment. Those who are fortunate enough to devote themselves to scientific research should first serve mankind with their own knowledge. Marx