Clockwise round the grid from 20 runs a quotation minus one word (1,2,4,4,4,1,4,1,5,4,4,9) followed by an honest servant’s name. Unclued lights exemplify the missing word. The source of the quotation appears in the completed grid and must be shaded.

Across

9 Charlie neglected very famous philosopher (5)

10 Boxer a little below par offering excuse (5)

12 Note chap going round institute (5, doubly hyphened)

13 Plant extract in delicacy friend nibbled (7)

15 Singing seamstress active in coastal city (5)

16 Background with cloudy island RSC repaired (5)

18 Yobs in old footwear cycling (5)

21 Takeaway district in...