"Men need reminding more than they need instruction."
This quotation – doubly relevant for Christians – is from the prolific writer/journalist/ scholar/critic Dr. Samuel Johnson, known as "Mr. Dictionary" for his compiling of the first far-reaching English lexicon in 1755. The ultimate literary lion, Johnson was also an inveterate church-goer whose High Church Anglican preferences acted as a stabilizer and monitor for his more fickle friend and biographer James Boswell.
In an age of growing skepticism led by the noted atheist David Hume (died 1776), Johnson bluntly (and typically) derided Hume's claim to not fear death by retorting, "Hold a pistol to Hume's breast and you'll see." Johnson claimed there was nothing new about Hume's arguments against Christianity – he had thought of them himself. Rather, "after a sytem (e.g. Christianity) is well settled upon positive evidence, a few partial objections ought not to shake it."
Christianity's miracles, asserted Johnson, "are attested by men who had no interest in deceiving but who...did actually lay down their lives in confirmation of the facts."
Well said, and like so many of Johnson's witty sayings, still highly relevant.