As fruit needs not only sunshine but cold nights and chilling s

As fruit needs not only sunshine but cold nights and chilling showers to ripen it, so character needs not only joy but trial and difficulty to mellow it. 水果的成熟不仅需要阳光，也需要凉夜和冷雨。人性格的陶冶不仅需要欢乐，也需要考验和困难。(布莱克)