The essence of mathematics lies in its freedom.
译文:在清风明月下,仿佛时光无尽,我能自在地驾乘鸾鸟仙鹤。人间不过是虚幻的梦境,回首往事,实在不堪再去重温。
The most dangerous phrase in aquaculture is: "This is how we've always done it."