"The Rime of the Ancient Mariner"
From Tardis Wiki, the free Doctor Who reference
"The Rime of the Ancient Mariner" was a poem written by Samuel Taylor Coleridge.
The First Doctor once quoted the poem, (AUDIO: Fields of Terror) as did the Fifth Doctor. (AUDIO: Loups-Garoux)
Vicki Pallister believed that the poem, which told of a traveller who was afraid to look behind him, perfectly summed up the First Doctor. (AUDIO: Fields of Terror)