翻译：鼓励人们坚持不懈地努力，最终会取得成功。

A garden must combine the poetic and the mysterious with a feeling of serenity and joy.

气候变化是我们这个时代最大的挑战之一，我们必须立即采取行动。

In the realm of computational complexity, every problem is a universe waiting to be explored.

Liberal democracy may constitute the "end point of mankind's ideological evolution" and the "final form of human government," and as such constituted the "end of history."