"Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding."
数学不是关于数字、方程、计算或算法的:它是关于理解的。
Never try to discourage thinking, for you are sure to succeed.
男性和女性在短期择偶欲望上存在差异,因为这对我们祖先的繁殖利益和代价不同。
I believe in the magic of Christmas.