This is a rearranged and abridged version of the journals of George Fox, one of the people who inspired Quakerism. Jonathan Fryer has done a good job of assembling the writings into some sort of order, and removing much of the redundancy.
I'm not sure if my rating is meant to reflect the writing or the content, but Fox doesn't come over as a particularly likeable character. He seems to enjoy winding people up and, rather than avoiding trouble where he could, he seems to deliberately exacerbate problems. He also revels in the misfortunes (and in some cases even deaths) of those who stand against him, or cross him.
I must admit I didn't bother reading the Epistles at the end, as that style of writing just does not appeal to me.