The sea's bounty is a privilege, not an entitlement.

充满爱的工作是一切生活和一切艺术的秘密。

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.

反馈是鲁棒控制系统的关键。