Alfred, Lord Tennyson Quote

Once at the croak of a Raven who crost it,
A barbarous people,
Blind to the magic,
And deaf to the melody,
Snarl'd at and cursed me.
A demon vext me,
The light retreated,
The landskip darken'd,
The melody deaden'd,
The Master whisper'd
'Follow The Gleam.'

"Merlin and the Gleam", st. 3 (1889).