This is the bit from the film that is apparently only loosely based on the facts. Great drama though. Good old Jimy Stewart. (This came out in 1953 - the year before the Wesley film. No connection!)
Bonhoeffer uses a similar phrase 'worldly Christianity'. It's J Gresham Machen that I want to line up most closely with. See his Christianity and culture here. Having done commentaries on Proverbs (Heavenly Wisdom) and Song of Songs (Heavenly Love), a matching title for Ecclesiastes would be Heavenly Worldliness. For my stance on worldliness, see 3 posts here.