The article discusses the intersection of Judaism, Esperanto, and the life of Dr. Ludwig Zamenhof, a Jewish ophthalmologist who invented Esperanto as a universal language.

Professor Esther Schor of Princeton University explores the topic of a universal language in her book "Bridge of Words: Esperanto and the Dream of a Universal Language."

In "A Curable Romantic" by Joseph Skibell, the novel delves into the life of Jakob Sammelsohn, an oculist in Vienna who encounters historical figures like Sigmund Freud and L. L. Zamenhof while exploring themes of love, language, and history.