几何学是关于永恒存在的知识。
Geometry is knowledge of the eternally existent.
The value and utility of any experiment are determined by the fitness of the material to the purpose for which it is used.
A fool always finds a greater fool to admire him.
对银行真正的考验不是它在顺境中的表现,而是它在逆境中的生存能力。