成功的关键在于不断学习和适应。
The key to success is to keep learning and adapting.
自身无灾无病，感受不到快乐，等到生病卧床，才了解到无灾无病的快乐；家中平安无事，感受不到快乐，等到祸事临头，才体会到平安无事的快乐。
Nature tends to produce constancy in all her works, but she does not always succeed.
一本好书是通往想象世界的魔法之门。