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.

The key to success is not just hard work, but working smart.

唯一真正的发现之旅不是去访问陌生的土地，而是拥有其他的眼睛。

爱是一种力量，它能让我们超越自我，看到更广阔的世界。

只凭一句赞美的话我就可以充实地活上两个月。

I don't think you can ever really prepare for the loss of someone you love.