The greatest sweetener of human life is Friendship. To raise this to the highest pitch of enjoyment, is a secret which but few discover.
释义:广泛地学习,恳切地提问,从而增长知识;行为高尚,言语谨慎,从而修养自身。这是对学习与修养的重视。 
可持续增长需要在技术和人才两方面都进行投资。
无人机的价值不在于飞行,而在于落地。