Does anyone know the primary source where these quotations occur in Barth’s writings?

“When Karl Barth jettisoned Soren Kierkegaard with the declaration that essentially he was a Catholic, he implicitly acknowledged that he had misinterpreted him in the first instance” (Lowrie, Short Life of Kierkegaard, 173).

“For all that, [Soren Kierkegaard] may have been essentially a Catholic in his way of thinking. That is what Father Przywara makes out in Das Geheimnis Kierkegaards, by which he was able to convince Karl Barth that, as he put it, ‘If I were to follow Kierkegaard, I might as well go over there,’ pointing, as he wrote these words near his window in the Hotel Hassler on the Pincian Hill, to the Vatican on the other side of the Eternal City’ (Lowrie, preface to Attack on Christendom, xvi).