Harry Potter and Draco Malfoy. Sherlock Holmes and Dr. Watson. Luke Skywalker and Han Solo.
Dr. Frankenstein and his creature.
In each of these pairings, one character acts as a foil to the other. A foil is any aspect of
a work of literature that helps us understand another aspect by providing a contrast. We get
to know Harry more deeply because we see him in contrast to Draco. Because Draco is calculating
and selfish and mean, Harry's good intentions, generosity, and bravery shine more brightly.
This use of the word foil probably comes from jewelry making, when a jeweler could use a
foil setting to make a fake gemstone shine more brightly. This works because the foil reflects
one thing a character, an event, or a social issue back to another to help us see it more brightly.
For example, in Arthur Conan Doyle's The Sign of the Four, Sherlock Holmes says to Dr. Watson,
observation shows me that you have been to the Wigmore Street Post-Office this morning,
but deduction lets me know that when there you dispatched a telegram.
Right! said Watson. Right on both points! But I confess that I don t see how you arrived at it.
It was a sudden impulse upon my part, and I have mentioned it to no one.
Sherlock Holmes then explains how he figured out where Watson was: a bit of reddish mud on
his shoe, a bundle of post-cards on his desk, and there you have it! Watson, as always, is impressed
by Holmes powers of observation and deduction. He can never tell in advance how Holmes arrives at
his conclusions and many Sherlock Holmes stories start with this kind of scene. It highlights the
contrast between them solid, dependable Watson; brilliant, unpredictable Holmes.
What makes Watson the foil is that ultimately, we learn about Sherlock Holmes more than we
ever know about Watson. Holmes is the star of the show. In the conversation we just saw, for
instance, Watson continues to express doubt and amazement while Holmes explains in great detail
how he knows where Watson went. Watson's mind is like a blank screen for Holmes's insights
or like the bit of foil that makes the jewel of Holmes's mind shine more brightly.
Foils do not only explain characters, though. They can also comment on social issues such as race or
gender. In Nella Larsen s 1929 novel Passing, the main characters, Irene Redfield and Clare Kendry,
are both identified as Black but are both able to pass as white in their segregated society. Clare,
who is described as exquisite, golden, fragrant, flaunting, is passionate and desperate for social
mobility. She has also passed as white for her whole adult life. Irene, her childhood friend, is
firmly ensconced in the Black community of Harlem. Irene feels dowdy and commonplace next to Clare,
but she also resents Clare for moving back and forth across the color line, as Clare pretends to
be white in the rest of her life but then visits Irene in Harlem. Clare, on the other hand, desires
the life that Irene has, connected to the vibrant Black arts scene of the Harlem Renaissance.
As Irene and Clare reflect back on one another, we understand their characters better. And,
together, they also illuminate how the black/white binary works. Racism depends on a clear binary a
clear separation between black and white. But because both Irene and Clare can pass as white,
they show how that line is actually blurry and unstable - there are no definitive
physical features that can be counted on to determine race. Clare's white husband is an
outspoken racist who has been unknowingly married to a Black woman for over a decade.
By breaking down the binary between black and white, the novel shows how race and social class
always work together, since race alone isn t always clear enough to maintain separation.
This is where the foil comes in again. Irene is jealous of Clare's beauty and, especially,
her expensive clothes, which she has been able to buy only because she passes as white.
In this way, Clare reflects back to Irene how desirable whiteness is made out to be.
But Irene also thinks Clare is too flashy, too try-hard. Clare's never satisfied with what
she has. In this way, Clare reflects back the price of passing as white:
the hollowness of denying her past and the possibility of being part of the Black community.
So, by seeing each character illuminated by the other, we get a more complex understanding
of how race and class work together to uphold institutions like racism and white supremacy.