Roaring ocean
Gilroy describes the ocean as "roaring," a metaphor used to depict the ferocity, strength, and power of the waves. Nautical imagery is used often by Gilroy in this text.
Like silk and gold
Gilroy uses the simile "spread out like silk and gold and reveries of graciousness." This use of simile suggests indulgence and fulfillment.
Like a flash
The simile "the thought came across me like a flash" is used to present the urgency of the thought. This simile is often used by people who are describing inspirational or life-changing thoughts or ideas.
The Dark Ages
"The Dark Ages" is used as a metaphor for a time when people were ignorant about things we take for granted. "Dark" is often used as a stand-in for ignorance.
Sacred fire
In his third chapter, Gilroy alludes to a poem written by James Weldon Johnson, about the origins of black music. In this poem, a metaphor is used to describe artistic output as being "sacred fire." This depicts the mysticism of this artwork and its power.