“A metaphor is a word used in an unfamiliar context to give us a new insight; a good metaphor moves us to see our ordinary world in an extraordinary way.”

"Politics and the English Language" (1946)
Context: Never use a metaphor, simile, or other figure of speech which you are used to seeing in print. Never use a long word where a short one will do. If it is possible to cut a word out, always cut it out. Never use the passive voice where you can use the active. Never use a foreign phrase, a scientific word, or a jargon word if you can think of an everyday English equivalent. Break any of these rules sooner than say anything outright barbarous.

On how he employs metaphors in “Jericho Brown: ‘Poetry is a veil in front of a heart beating at a fast pace” https://www.theguardian.com/books/2018/jul/28/jericho-brown-book-interview-q-and-a-new-testament-poetry in The Guardian (2018 Jul 28)

Australian Broadcasting Corporation http://www.abc.net.au/radionational/programs/allinthemind/5009818 (October 11, 2013)

Source: Dialogues

The Age of Insight (2012)

An indication of what he meant by the term "The Big Music" of a Waterboys song, a phrase which came to be applied to the group's early musical style, and that of a few other bands, as quoted in "Pieces of eighties" by John Robinson, in The Guardian (23 April 2004) http://www.theguardian.com/music/2004/apr/24/popandrock1
Variant:
A metaphor for seeing God's vision in the world.
As quoted in "The Making Of... The Waterboys’ The Whole Of The Moon", in Uncut (June 2013) http://www.uncut.co.uk/the-waterboys/the-making-of-the-waterboys-the-whole-of-the-moon-feature

Meta Maths!: The Quest for Omega https://books.google.com/books?id=ZACLDQAAQBAJ&pg=PA11. Vintage Books (2006). p. 11

Source: Middlemarch

As quoted in "Bildung in Early German Romanticism" by Frederick C. Beiser, in Philosophers on Education : Historical Perspectives (1998) by Amélie Rorty, p. 294