It is the greatest happiness of the greatest number that is the measure of right and wrong.
种一棵树最好的时间是20年前,其次是现在。
The basis of a democratic state is liberty.
海底并非寂静之地;它是一个动态的、不断变化的环境。
As you grow older, you will discover that you have two hands, one for helping yourself, the other for helping others.
"Do not go where the path may lead, go instead where there is no path and leave a trail."