如果没听说过恋爱是什么的话,有些人根本不会坠入爱河。
快乐是最高的善,我们追求快乐,避免痛苦。
The task of economics is not only to interpret phenomena, but also to provide practical advice and policies for society.
时间不是药,药在时间里。
"A good picture book should work without any words at all."