Abraham "Bram" Stoker (1847 – 1912) was an Irish novelist and short story writer, best known today for his 1897 Gothic novel Dracula which I have to admit I have still never read right through. During his lifetime, he was better known as personal assistant of actor Henry Irving and business manager of the Lyceum Theatre in London, which Irving owned. He wrote four novels before Dracula and seven after but they are rather forgotten now. My son was in school and played football with twins (named after angels) who are descended from him.
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.