Being and Time of Redemption" (1921), Karl Barth's "The Epistle to the Romans" (1922), and Adolf Hitler's "Mein Kampf" (1925). Upon its publication, it was recognized as a groundbreaking philosophical work, with reviewers crediting Heidegger with "brilliance" and "genius". The book, which has been described as the "most influential version of existential philosophy", quickly became "the focus of debates and controversy". Heidegger claimed in the 1930s that commentators had attempted to show similarities between his views and those of Hegel in order to undermine the idea that "Being and Time" was an original work. In response, Heidegger maintained that his thesis that the
Philosophy and literature narrative "Philosophus Autodidactus" as a response to al-Ghazali's "The Incoherence of the Philosophers", and then the 13th century Islamic theologian-philosopher Ibn al-Nafis also wrote a fictional narrative "Theologus Autodidactus" as a response to Abubacer's "Philosophus Autodidactus". The German philosopher Friedrich Nietzsche often articulated his ideas in literary modes, most notably in "Thus Spoke Zarathustra", a re-imagined account of the teachings of Zoroaster. Marquis de Sade and Ayn Rand wrote novels in which characters served as mouthpieces for philosophical positions, and act in accordance with them in the plot. George Santayana was also a philosopher who wrote novels and poetry; the