Yet nothing will surpass Nitze's initial contribution. Granted, he lit the bladder with internal incandescence while others proved the power of imported illumination. But, like Bozzini, his concept of organ illumination forever changed how urologists inspect the urinary tract. In his textbook on cystoscopy in 1888 Nitze stated, "This writing presents only a framework, the complete construction of which will be accomplished over the course of years through the joint work of numerous researchers."