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 whole art of teaching is only the art of awakening the natural curiosity of young minds for the purpose of satisfying it afterwards.

We don't invent our missions, we detect them.

For us who understand life, figures are a matter ofindifference.

不断追求智慧，是人生的最高目标。