诗歌必须始终具有道德目的；它应该在愉悦的同时教导。
Poetry must always have a moral purpose; it should instruct while it delights.
"I want to write books that make children think and feel."
我们听到的言语暗示了我们没有听到的东西。
Innovation in mining technology isn't optional - it's essential for our survival and growth.
每一个数学问题都是通向新理解世界的窗口。