领导力意味着今天做出艰难的决定，明天将惠及所有人。

一个人必须经过一番刻苦奋斗，才会有所成就。

What we call National-Socialism is the poisonous perversion of German ideas.

The wise are not ashamed to seek knowledge, for they know the ocean of wisdom is boundless.

Capitalism, then, is by nature a form or method of economic change and not only never is but never can be stationary.

数学的本质在于其自由性。