1. When you can’t tell yourself what you learned today, don’t go to bed. ——Lichtenberg

2. Reading is easy, thinking is difficult, but without one of the two, it will be useless. ——Franklin

3. False confession is really a terrible thing. ——Balzac

4. Do you want to be a happy person? I hope you can first learn to bear hardships. ——Turgenev

5. All virtues are included in self-trust. ——Emerson

6. As long as there is something you don’t know, you should always learn. ——Little Seneca

7. A weak-willed person will never be honest. ——La Rochevry

8. The pursuit of truth and knowledge and the struggle for it are one of the highest qualities of human beings. ——Einstein