A professional quote maker is a person who, by profession, makes quotes. As quote making is a profession governed by various guilds and trade organizations, becoming a professional quote maker typically requires several years of schooling and a Ph.D. in a scientific field, such as atheism. Sometimes, people of distinction (celebrities, scientists, comedians, Nobel laureates, etc.) are accorded honorary professional quote making status; this is akin to an honorary degree from a university.
Professional quote makers are adept at carefully overlaying pictures of nebulae and starry nights with pithy remarks using Photoshop or other image-editing software.
There are also many amateur quote makers who, while not professionals, are polymaths or savants and consider quote making to be a personal hobby.
"In this moment, I am euphoric. Not because of any phony god's blessing. But because, I am enlightened by my intelligence." - A. A. Lewis, not a professional quote maker, but a hobbyist.