物新则壮，旧则老；新则鲜，旧则 – 座右铭

座右铭@zym

2023-07-06

物新则壮，旧则老；新则鲜，旧则腐；新则活，旧则板；新则通，旧则滞；物之理也。
康有为

#物理 #青春^[47]

2023-07-06

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