tim o'brien. going after cacciato. [invented worlds]

 

"He had thrown rocks into the Des Moines River, pretending this would someday change its course, imagining how the rocks would accumulate to form new currents and twists, how large effects might come from small causes." 

Quite obviously not the Des Moines River. Nonetheless, I threw rocks into this river last summer and had similar thoughts while doing so. 

O'Brien, Tim. Going After Cacciato. New York: Delacorte Press, 1978.