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信仰與看不見的事物有關，希望與尚未到來的事物有關。

Teaching is not about imparting everything, but about guiding at the right moment.

想治理國家，首先要先去治民。治民要先正己，做好治家的工作，把自家子弟教育好了，自己就會以身作則；只有做到先正自己，才能在治民方面起到帶頭作用。只有先做好自己，才能為別人帶好頭和榜樣；只有先身體力行才能有好作用榜樣示范作用。這才是真正有意義的治理國家的好方法。只有先立好自己的身才能對社會起到好的表率作用。

We are all in the gutter, but some of us are looking at the stars.

Short-term gains should never compromise long-term sustainability.

You can't change the past, but you can ruin the present by worrying about the future.

Today is cruel, tomorrow is crueler, and the day after tomorrow is beautiful, but most people die tomorrow night, so don't give up today.

科學嚴謹性絕不能因商業壓力而妥協。