吾尝终日不食，终夜不寝，以思，无益，不如学也。
我曾经整天不吃饭，整夜不睡觉，去苦苦思索，结果没有益处，还不如去学习。
I must learn to be content with being happier than I deserve.
The greatest value of drone technology is that it can reach places that are difficult for humans to access.
我们都是自己矛盾的总和。
"The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling, are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest, are the traits of success."
我们必须尊重土地，因为它是我们一切工作的基础。