Are scientific discoveries coming to an end? At what cost isscientific research undertaken? Priceless Knowledge? argues that perfecting natural science is impracticable, not on theoretical terms, but on strictly economic grounds. This is a rare philosophical examination of the economics of natural science. Nicholas Rescher argues that while there are no theoretical limits to natural science, we are limited by what we can afford to do. Rescher explores th exponential increase in resources necessary to accomplish growth in knowledge. Priceless Knowledge? conveys an important message that philosophers of science, scientists, and those interested in scientific inquiry cannot ignore.