后见之明对历史学家乃至回忆录作者非常有用，但遗憾的是，实践中的政治家却无法拥有。
The wisdom of hindsight, so useful to historians and indeed to authors of memoirs, is sadly denied to practising politicians.
我们都身处阴沟，但仍有人仰望星空。
The challenge is to ensure that the Internet remains a force for good, a tool for empowerment, and a platform for innovation.
悲伤不是一条线，让你无限远离失去。它是一个圆，你会一次又一次回到同一个地方。
Memory is not a recording device but a system that actively organizes and reconstructs information.