Products should be like water, adapting to the needs of different users.

每个角色都是一个世界，而每个世界都是一个疑问。

For every dollar you spend purchasing something substantial， expect to pay a dollar in repairs， maintenance， or disposal by the end of its life.

可持续发展不是减少伤害，而是创造更多益处。

书籍可能是危险的。最好的书应该贴上“这可能会改变你的生活”的标签。

The ability to focus attention is crucial for learning, memory, and performance in complex tasks.