真相很少是纯粹的，也从不简单。
Mathematics teaches us to think logically and to approach problems systematically.
今天的过度捕捞是在窃取后代的资源。
Deep into that darkness peering, long I stood there wondering, fearing, doubting, dreaming dreams no mortal ever dared to dream before.
The Moving Finger writes; and, having writ, Moves on: nor all thy Piety nor Wit Shall lure it back to cancel half a Line, Nor all thy Tears wash out a Word of it.
