Happiness is beneficial for the body, but it is grief that develops the powers of the mind.
I don't want to be a martyr, I want to be a survivor.
The best time to plant a tree was twenty years ago. The second best time is now.
我们关注的不是数字,而是产生数字的那些东西。
"A good picture book should work without any words at all."
"The immune system is the key to fighting cancer."