Robert Cormier said this quote
“ When he ran, he even loved the pain, the hurt of the running, the burning in his lungs and the spasms that sometimes gripped his calves. He loved it because he knew he could endure the pain, and even go beyond it. He had never pushed himself to the limit but he felt all this reserve strength inside of him: more than strength actually—determination. And it sang in him as he ran, his heart pumping blood joyfully through his body. ”