Who said "A shadow on the wall is still a shadow."?

This quote is attributed to Theon Greyjoy.

A shadow on the wall is still a shadow. - Theon Greyjoy

"A shadow on the wall is still a shadow."

Theon Greyjoy

Character in A Game of Thrones

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"The man who fears losing has already lost."

"The things we love destroy us every time."

"The iron price and the gold price."

"The past shapes who we become."