自然法的最低内容是任何法律体系所必需的。

在远处防守不如在近处防守，把守太繁琐不如把守要塞，用常法把守不如用出奇制胜的方法，把守宽阔的地方不如把守狭窄的地方，在深处把守不如在浅处把守。

Man's main task in life is to give birth to himself, to become what he potentially is. The most important product of his effort is his own personality.

Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.