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He was no dragon, Dany thought, curiously calm. Fire cannot kill a dragon

George R. R. Martin (2011). “A Game of Thrones 4-Book Bundle: A Song of Ice and Fire Series: A Game of Thrones, A Clash of Kings, A Storm of Swords, and A Feast for Crows”, p.446, Bantam
He was no dragon, Dany thought, curiously calm. Fire cannot kill a dragon