I want to know the answer to the following question:
Which work of Isaac Newton was published in Latin and remained inaccessible to readers without education until Enlightenment writers began to translate and analyze it in the vernacular?
All the background I'm provided with is that "As public interest in natural philosophy grew during the 18th century, public lecture courses and the publication of popular texts opened up new roads to money and fame for amateurs and scientists who remained on the periphery of universities and academies.". Is that enough to answer the question?