“Also quoted as "Lighthouses are more helpful than churches" or "A lighthouse is more useful than a church." Although not by Franklin in this form, it may be intended as a paraphrase of something he wrote to his wife on 17 July 1757, given in a footnote on page 133 of Memoirs of the Life and Writings of Benjamin Franklin (1818). After describing a narrow escape from shipwreck he added:”

Source: Wikiquote