https://churcheswithoutchests.net/2025/03/13/the-imitation-of-christ/
I am pleased to note de Bruyn also offers some praise for the Theologia Germanica, another worthy pre-Reformation work.
But as I've often argued there's a problem with this approach to orthodoxy - it's progressive. Men like de Bruyn are willing to say that à Kempis and the anonymous author (the Friend of God from the Oberland) of the Theologia were Christians.