计算复杂性的研究不仅仅是关于问题的分类;它是关于理解计算本身的本质。
We try to buy stocks selling at a discount from their asset value.
保持专注,保持谦逊,永远学习。
The spread of liberal democracy around the world is not inevitable, but it is the most likely outcome of the historical process.
Every moment of the world is complete in itself.