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Prediction is very difficult, especially about the future.

世界不會記住你說過什么，但會記住你做過什么。

The teacher must believe in the potential of his students.

在價格被遺忘后，品質仍會被長久銘記。

The study of heuristics reveals how we simplify complex problems, sometimes leading to errors.

自由的代價是永恒的警惕。