Hi, Does anyone know what the first published papers were on Calculus? I'm interested in Newton's work specifically. Insomuch that I don't want a book with a load of problems to work through (I've got plenty of those) but more of an original paper/document on what was going through his mind when working with tangents associated with what didn't work and why it didn't work and so on from the words of Newton himself. I'd say I'm looking for more of a Diary on the Discovery of Calculus. But, I can't seem to find anything of the sort.