它被认为是具有活力，乐观或悲观，适度。

It is believed to have verve, of optimism, moderateness, or pessimism.

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但是，是什么推动了乐观或悲观情绪呢？

But what drives the underlying optimism or pessimism?

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你可以选择拥有乐观或悲观的态度，但你也可以选择活着有希望或没希望。

You can choose not only to have a positive or negative attitude, but you can also choose to live with or without hope.

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