"Men and women differ in their desires for short-term mating because the reproductive benefits and costs differed for our ancestors."
治理大国如同烹调小鱼(不宜过多翻动)
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
现在不是轻松舒适的`时候.现在是大胆和忍耐的时候。
Science without religion is lame, religion without science is blind.