1. Working for the happiness of mankind is such a magnificent cause and how great this purpose is! ——Saint Simon

2. The greatest happiness possible for each person is the greatest happiness achieved by all people. ——Zola

3. True happiness can only be realized when you truly understand the value of life. ——Munir Nasuf

4. Happy are those who are interested in research! Happier are those who can free their minds from delusion and free themselves from vanity through research. ——Lametli

5. Treat the happiness of others as your own happiness, dedicate flowers to others, and keep the thorns to yourself! —— Valdes

6. As long as you have one reasonable thing to do, your life will be particularly beautiful. ——Einstein

7. Science is by no means a selfish pleasure. Those who are fortunate enough to devote themselves to scientific research should first use their knowledge to serve mankind. ——Marx