Complex sentence: Evola idolized the Nazi SS and admired Heinrich Himmler, whom he knew personally, though he had reservations about Adolf Hitler because of Hitler's reliance on Völkisch nationalism.
Split into simpler sentences: Evola idolized the Nazi SS and admired Heinrich Himmler, whom he knew personally. However, he had reservations about Adolf Hitler because of Hitler's reliance on Völkisch nationalism.