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希望不是一種情緒，而是一種選擇。

I keep thinking about this river somewhere, with the water moving really fast. And these two people in the water, trying to hold onto each other, holding on as hard as they can, but in the end it’s just too much. The current’s too strong. They’ve got to let go, drift apart.

科學最有價值的部分是看到你的工作幫助他人。

我確信宇宙中充滿了智慧生命。只是它們太聰明了，不會來這里。

集中注意力的能力對于學習、記憶和復雜任務的表現至關重要。