At that age， I'd take any excuse to make estimates and do minor arithmetic. I'd calculate our gas mileage -- figure out useless statistics on things like grocery spending. I'd been hearing an ad campaign about smoking. I can't remember the details， but basically the ad said， every puff of a cigarette takes some number of minutes off of your life: I think it might have been two minutes per puff. At any rate， I decided to do the math for my grandmother. I estimated the number of cigarettes per days， estimated the number of puffs per cigarette and so on. When I was satisfied that I'd come up with a reasonable number， I poked my head into the front of the car， tapped my grandmother on the shoulder， and proudly proclaimed， "At two minutes per puff， you've taken nine years off your life！"

Don't be embarrassed by your failures, learn from them and start again.

The future of quantum computing depends on our ability to overcome the challenges of noise and decoherence.

当你足够和正确地努力了，幸福便会来敲门的。

——〈建国方略之一：孙文学说——行易知难〉，1919年5月20日

编程的艺术是组织复杂性的艺术，是掌握多样性并尽可能有效地避免其混乱的艺术。

In the world of computing, the boundary between the possible and the impossible is often defined by the algorithms we can devise.

历史的塑造现在超过了人们根据珍视的价值观来定位自己的能力。哪些价值观？即使没有恐慌，人们也常常感觉到旧的感觉和思维方式已经崩溃，而新的开始模糊到道德停滞的地步。

我们都在阴沟里，但仍有人仰望星空。

The challenge of filmmaking is to find the universal in the specific.