THERE is only one event in life which really astonishes a man and startles him out of his prepared opinions.
人生中只有一件事,能真正使人惊讶,把他从预先形成的看法中猛然唤醒。
— Robert Louis Stevenson · Virginibus Puerisque, and Other Papers · Virginibus Puerisque · III · On Falling in Love —