痛苦的源头是无知。
The fountain of content must spring up in the mind, and they who have so little knowledge of human nature as to seek happiness by changing anything but their own dispositions will waste their lives in fruitless efforts.
智者能预测未来，愚人只看现在。
女性在劳动力市场中进步的故事也是一个未完成革命的故事。
人类的心灵起源于爱和争斗在体内的平衡。
The most important thing in mathematics is to ask the right questions.