"The universe is not only stranger than we imagine, it is stranger than we can imagine."
Illness is the night-side of life, a more onerous citizenship. Everyone who is born holds dual citizenship, in the kingdom of the well and in the kingdom of the sick.
Where returns are concerned, time is your friend. But where costs are concerned, time is your enemy.
在回报方面，时间是你的朋友。但在成本方面，时间是你的敌人。
优化是在给定约束条件下做出最佳决策的艺术。
I was so much older then, I'm younger than that now.