程序测试可以用来显示错误的存在，但永远不能显示它们的缺失！

The market is always right, and the price is never too high to buy or too low to sell.

The strength of a political system lies in its ability to adapt to changing circumstances and to incorporate new ideas and practices.

The only thing that counts is what cannot be explained.

艺术家必须是绝对的仆人。

学习永远不会使心智枯竭。

诗歌是一种理解世界的方式。

【译文】 孔子说：“年轻人值得敬佩，怎知后代不如今人？四五十岁还默默无闻的人，就没什么前程了。”