"In the natural sciences, language (mathematics) is a useful tool: like the microscope or telescope, it enables us to see what is otherwise invisible. In the social sciences, language (literalized metaphor) is an impediment: like a distorting mirror, it prevents us from seeing the obvious. That is why in the natural sciences, knowledge can be gained only with the mastery of their special languages; whereas in human affairs, knowledge can be gained only by rejecting the pretentious jargons of the social sciences."