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.
"We are all fools in love."
诗歌是灵魂的音乐，尤其是伟大而有感情的灵魂的音乐。
The artist must be a philosopher and a poet.
诗歌不解释，它揭示。
A lady's imagination is very rapid; it jumps from admiration to love, from love to matrimony in a moment.