Our sweetest songs are those that tell of saddest thought.

La vraie vie est absente. Nous ne sommes pas au monde.

Don't watch the clock; do what it does. Keep going.

When life seems hard, the courageous do not lie down and accept defeat; instead, they are all the more determined to struggle for better future.

不存在所谓的质量问题。只有问题，而这些问题的解决方案可能涉及质量考虑。