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農時：指春耕、夏耘、秋收三個時令。與其等災荒來了再想辦法補救，不如早防備災荒，而防備災荒最好就是抓住農時。

Change your life today. Don't gamble on the future, act now, without delay.

數學的本質不是把簡單的事情復雜化，而是把復雜的事情簡單化。

我相信愛的力量。

The past is a cupboard full of light and all you have to do is find the key that opens the door.

歷史實際上不過是人類罪行、愚蠢和不幸的記錄冊。