幸福是通过美德获得的,是人自己意愿获得的善。
Happiness is secured through virtue; it is a good attained by man's own will.
I don’t like to do easy things. I like to do things that are challenging and that push me.
Safety isn't just a policy, it's a culture that starts at the top.
我对事物如何在世界上移动着迷,无论是物理上还是概念上。
教育的艺术必须从教育的科学中汲取其法则。
The only real joy is the joy of creation.