解决复杂问题的关键通常是找到正确的抽象，这种抽象可以在不丢失问题本质特征的情况下简化问题。
The key to solving complex problems is often to find the right abstraction that simplifies the problem without losing its essential features.
True leaders are always alone.
The beauty of the universe lies in its complexity and simplicity.
绘本是文字和图像之间的舞蹈——它们应该一起舞动。
The more we learn, the more we realize how much we don’t know.