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La luz más intensa nace de las sombras más profundas.
Sustainability is not a choice; it's our responsibility to future generations.
The process of doing mathematics is more important than the result.
语出西汉·桓宽《盐铁论·疾贪》。表:古代测量日影以计时的标杆。要想让影子正,就要先将标杆树直;要想让下面的人清廉,就要先自己做到清廉。说明上位是下位的表率。
When I stand before thee at the day's end thou shalt see my scars and know that I had my wounds and also my healing.