1. You never know, until you try, you have never tried, never really tried. You'll never know if you don't work hard, which means you haven't worked hard. Do not, for one answer, give up the purpose that you resolved to achieve. (William Shakespeare, British dramatist) Do not, for one repulse, give up the purpose that you resolved to effect. If you double yourself, then your foothold is unstable. (Ibsen, Norwegian dramatist) If you doubt yourself, then your foothold is really shaky. 4. The enlightenment of the mind broadens the horizon of life. (Blake) The horizon of life broadens with the enlargement of the mind. (Blake) 5. In the real battle of life, they only rehearse, they advance every day and never give up. Living in a tenacious battle, only those who persevere and forge ahead every day can win. 6. Because all pain helps us grow up, no matter how much we hate it at that time. All pain helps us to make progress, no matter how much we hate it at that time. 7. As long as there is unlimited enthusiasm, a person can succeed in almost anything. (Schwal) As long as there is unlimited enthusiasm, one can succeed in almost anything. (Schwartz) 8. Everything has its existence value. The most important thing in life is to set a lofty goal and make up your mind to achieve it.