如果两方发生争执，不要争吵，让第三方来判决。
世界是黑暗的，而光弥足珍贵。
Every technological breakthrough is a challenge to the limits.
Re graphics: A picture is worth 10K words - but only those to describe the picture. Hardly any sets of 10K words can be adequately described with pictures.
永远在学习。世界在不断变化，你需要跟上。
A good world needs knowledge， kindliness， and courage； it does not need a regretful hankering after the past or a fettering of the free intelligence by the words uttered long ago by ignorant men.