The better must come before the sweet; and that also makes the sweet the sweeter.
苦先於甜，甜更甜。
--John Bunyan
寶劍鋒從磨礪出，梅花香自苦寒來。
Optimism is the faith that leads to achievement. Nothing can be done without hope and confidence.
樂觀是通往成功的信念。沒有希望和信心將一事無成。
——海倫·凱勒
你不自信一點，怎麼乘風破浪？