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確保和平的最佳方式是維持主要國家之間的權力平衡。

To talk about painting is not only difficult but perhaps pointless too.

You think you know when you can learn, are more sure when you can write, even more when you can teach, but certain when you can program.

科學中最重要的是不要停止提問。

We leave behind something of ourselves wherever we have been.