在计算中,将显而易见的东西转化为有用的东西是“挫折”这个词的生动定义。
                    The forest doesn't need us, but we need the forest—this truth should guide every decision we make in forestry.
                    最古老、最简短的词语——'是'和'否'——是需要最多思考的。
                    Freedom is never voluntarily given by the oppressor; it must be demanded by the oppressed.