人的身体是人的灵魂最好的图画。
The human body is the best picture of the human soul.
The first task is to understand the problem, the second to find a solution, and the third to carry it out.
最终，一个理论的价值不在于它的复杂性，而在于它解释和预测的能力。
眼睛不仅仅是光学仪器；它是心灵感知外部世界的手段。