你一生中最少能做的就是弄清楚你所希望的。而你能做的最多的就是活在那希望之中。不是远远地欣赏它，而是住在它的屋檐下。
"The very least you can do in your life is to figure out what you hope for. And the most you can do is live inside that hope. Not admire it from a distance but live right in it, under its roof."
过去是一个异国；他们在那里做事的方式不同。
音乐让我找到了人生的方向。
The Liskov Substitution Principle is a fundamental concept in object-oriented programming, ensuring that derived classes can be used in place of their base classes without altering the correctness of the program.
