Why did Nazi authorities consider Karl Jaspers an enemy of the state?

Nazi authorities classified the German philosopher Karl Jaspers as an enemy of the state primarily because his wife was Jewish.1

Beyond this discriminatory classification, Jaspers’ intellectual integrity further alienated him from the regime. Unlike many of his contemporaries, he refused to make any concessions to the doctrines of National Socialism. His steadfast commitment to independent thought and his refusal to align with Nazi ideology led the authorities to implement a series of punitive measures against him, including his removal from his professorship and a total ban on his publications, which effectively barred him from continuing his academic work in Germany.1