Man is good by nature， society corrupts him.
人性本善，社会使其败坏。
I'm the reason your mama's dead, I'm the reason your daddy fled.
To really be a nerd, she’d decided, you had to prefer fictional worlds to the real one.
Randomized evaluations can help us understand what works and what doesn't in development.
你无法改变你周围的人，但你可以改变你选择与谁在一起。
The mathematician's patterns, like the painter's or the poet's, must be beautiful; the ideas, like the colors or the words, must fit together in a harmonious way.
