The city's poor are like the roots of a tree: unseen, but essential to its survival.
城市的穷人就像树的根:看不见,但对生存至关重要。
The most important single aspect of software development is to be clear about what you are trying to build.
在艺术中,就像在生活中一样,最简单的解决方案往往是最深刻的。
Psychology must be based on direct experience, not inference.