To love is to risk not being loved in return. To hope is to risk pain. To try is to risk failure, but risk must be taken because the greatest hazard in life is to risk nothing.

Competition regulates the rate of profit, and profit regulates the rate of accumulation.

教育的回报太遥远，而今天的生计太紧迫。

Topology is the study of the properties of a figure that are unchanged by any deformation.

The best way to predict the future is to invent it.

真相常常隐藏在言语之间的沉默中。

每一次创造行为首先是一种破坏行为。