艺术的目的是表现事物的内在意义，而非外在表象。

In mathematics, the journey from confusion to clarity is the most rewarding experience.

The best stories are those that mix the happiness and sadness of life together in the right proportions.

解析：吃粗粮，喝清水，弯起胳膊当枕头，这其中也有着乐趣。