1. Sharp tools make good work.

    工欲善其事，必先利其器。

    2.The first wealth is health. ---- Ralph Waldo Emerson

    健康是人生第一财富。----美国思想家爱默生

    3. You can't judge a tree by its bark.

    人不可貌相。

    4. Doubt is the key to knowledge.

    怀疑是知识的钥匙。

    5. Cease to struggle and you cease to live.

    生命不止，奋斗不息。

    6. The secret of success is constancy to purpose.

    成功的秘密在于始终如一地忠于目标。

    7. Success grows out of struggles to overcome difficulties.

    成功来自于克服困难的斗争。

    8. What pains us trains us.

    使我们痛苦的东西在真正锻造我们。

    9. Hope for the best, but prepare for the worst.

    做最好的打算，做最坏的准备。

    10. Keep on going and never give up.

    勇往直前，决不放弃!

    ——摘自网络