第一代杂种的同一性,第二代的不相似性,是精确观察者无法忽视的事实。
If you worried about falling off the bike, you'd never get on.
记忆是一种成就,甚至是一种更新。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
"Love is all that matters in the end."