我觉得音乐是一种很神奇的东西，它可以让你快乐，也可以让你悲伤，但最重要的是它能让你感受到生活的美好。

撒谎的麻烦在于你必须记住一切。

The PAC learning framework provides a formal way to quantify the learnability of a concept class.

To safeguard national independence, we must strengthen national unity.

The most important thing is to have a child. Everything else is secondary.

幸福存在于内心。

The duties of all public officers are, or at least admit of being made, so plain and simple that men of intelligence may readily qualify themselves for their performance.