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The worst way to miss someone is to be sitting right beside them knowing you can‘t have them。

Program testing can be used to show the presence of bugs, but never to show their absence!

The truth of history is often found in its silences.

實現明天的唯一限制將是我們今天的疑慮。

未來不是由現在提供的替代路徑中選擇的結果，而是一個被創造的地方——首先在思想和意志中創造，然后在活動中創造。