一个人的最终衡量标准不是他在舒适和便利时站在哪里,而是他在挑战和争议时站在哪里。
The past is a foreign country; they do things differently there.
The value of unpaid work is often invisible in economic measures, yet it is the backbone of society.
无偿工作的价值在经济衡量中常常不可见,但它却是社会的支柱。
A story is never finished; it simply waits for the next teller.
预见数学未来的真正方法是研究它的历史和现状。