幸福婚姻和痛苦婚姻的区别...在于大约十个持续的愚蠢或善良行为，取决于方向。

真正的领导力意味着在今天做出艰难的决定，而这些决定将在几十年后得到回报。

A healthy forest means a healthy economy; the two are inseparable.

Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.

The more you can increase fear of drugs and crime, welfare mothers, immigrants and aliens, the more you control all the people.

不要烦恼啊不要烦恼，心怀烦恼的人更容易衰老。