James Dashner said this quote

I promised I'd save him, take him home! I promised him! . . . Thomas hugged Chuck to his chest, squeezed him as tightly as possible, as if that could somehow bring him back, or show thanks for saving his life, for being his friend when no one else would.Thomas cried, wept like he'd never wept before. His great, racking sobs echoed through the chamber like the sounds of tortured pain. (pg 358 hardback)