Benjamin Disraeli 1804-1881 Like his father, Isaac Disraeli, Benjamin took a keen interest in literature. He is remembered now chiefly as a politician, having served as prime minsiter more than once. In his twenties he wrote six novels (1826-1837) after which he entered Parliament. He wrote another trilogy of novels in his thirties, with political themes.
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.