Touted on the deism.com website as "a hard hitting attack on superstition and 'revealed' religion while encouraging the replacement of superstition in our lives and in our ideas of God with God-given reason", this book forgets its own objective throughout - and certainly bamboozled the deists over there.
Allen (and Young) criticized organized religion in general and Christianity in particular, but his Deist assumptions fail in the face of actual reason. Now, his arguments are sound (and quite well written), but he seemed to only want to question the organization and not himself. His own superstitions are rampant, but as he casts his beliefs as "reason" based - without qualification or justification - while disparaging Christian dogma as "tend[ing] to superstition and idolatry", the entire text rang sour.
Disappointed, but enlightened. I had not read any Ethan Allen, and so I learned how learned he was.