可能近似正确（PAC）学习的概念在计算学习理论中具有基础性意义。
The concept of probably approximately correct (PAC) learning has been foundational in computational learning theory.
To solve the hard problem, we may need to expand our physical worldview.
爱是世界上最强大的力量。
我们需要犯错的自由，承认错误的勇气，以及从中学习的智慧。
There will always be things we wish to say in our programs that in all known languages can only be said poorly.
Sometimes you have to lose yourself before you can find anything.
可持续性不是一种选择，而是我们共同的责任。
The true cost of energy must account for both its production and its legacy.