David Livingstone (1813 – 1873) was a Scottish Congregationalist pioneer medical missionary with the LMS and an explorer in Africa. His meeting with H M Stanley 1871 gave rise to the popular quotation "Dr. Livingstone, I presume?" A national hero, his fame soon gained mythic proportions. He was a Protestant missionary martyr, subject of an inspirational working-class "rags to riches" story, a scientific investigator and an explorer, as well as an imperial reformer, anti-slavery crusader and advocate of commercial empire. More here.
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.