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數學的真正樂趣在于發現的過程，而不僅僅是結果。

在變革的時代，學習者將繼承地球，而那些博學的人會發現自己裝備精良，卻要面對一個不復存在的世界。

陌生人與我們接近，因為我們在他們和我們自己之間感受到民族、社會、職業或一般人類本性的共同特征。他們遠離我們，因為這些共同特征超越了他們或我們，并且只因為它們連接了許多人而連接我們。

人は誰でも、一度は自分を見失うことがある。大切なのは、そこからどう立ち直るかだ。

"Grief is not a linear process. It comes in waves, and sometimes those waves knock you down."

Sir, where are you running? Are you doing this for world peace? Are you doing this for the homeless? Are you running for women's rights? The environment? They just couldn't believe that somebody would do all that running for no particular reason. Why are you doing this? I just felt like running. I just felt like running.