How did Edmond Halley help pay for the publication of Newton’s Principia?

Edmond Halley played a crucial role in the publication of Isaac Newton’s Principia. When the Royal Society received the manuscript in 1686, the organization decided that Halley should undertake the responsibility of overseeing the work and printing it at his own expense.1

Beyond providing the necessary financial backing, Halley was deeply involved in the production process. He edited the text, corrected the proofs, and wrote laudatory Latin verse for the preface to honor Newton. Furthermore, he acted as a mediator, tactfully resolving a priority dispute between Newton and Robert Hooke to ensure the masterpiece could be successfully brought to the press in 1687.1