最大的风险是根本不冒险。
Time is dead as long as it is being clicked off by little wheels; only when the clock stops does time come to life.
我曾梦到往日的一个梦。
数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。
The intelligence of drones is not the end, but the beginning.