"Illustrations are not just pictures; they are the soul of the story."

A melody can stay with you forever.

除第一次外，所有内容均应自上而下构建。

孔子说：“吃粗粮、喝白水、弯着胳膊当枕头，乐也在其中了！缺少仁义的富贵，对我来说，就象天上的浮云。”

Laws, in their most general signification, are the necessary relations arising from the nature of things.

The beauty of physics lies in its ability to reveal the hidden connections between seemingly unrelated phenomena.