Soren Kierkegaard described the movement of faith in Fear and Trembling (1843, as Johannes de silentio): after the infinite resignation comes the leap, believing 'by virtue of the absurd' that with God all things are possible. Camus devotes a chapter of The Myth of Sisyphus (1942) to Kierkegaard, Chestov, and Jaspers, accusing them of finding the absurd and then deifying it, exchanging lucidity for hope, which he names philosophical suicide.
Believers reclaim the term happily: the leap is the point of faith, a feature requiring the absurd to exist at all. Kierkegaard's knight of faith, who leaps and then walks among us buying curtain rods, is deliberately more ordinary than Camus's rebel.
The quarrel is precise and unfalsifiable: both sides agree the world offers no rational guarantee, and disagree only about what honesty permits afterward. Camus calls hope a betrayal of the evidence; Kierkegaard calls staying put a failure of nerve. The archive verdict: the disagreement is the doctrine.
If faith is a leap off the cliff of reason, is the leap courage or retreat?