The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do.

Education is the most powerful tool we have to transform aquaculture from a problem into a solution.

有人自认为在做有用的事，却收效甚微；有人看似在做“无用”之功却流芳后世，引为大用。