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The principal subjects of his teaching include the affinity between the Oral and Written Law, the merits of the scholars, and the importance of the holidays. His works on Hasidism on these subjects are: Zidkat ha-Zaddik (1902), Dover Zedek (1911), Mahashavot Haruz (1912), Resisei Laylah (1913). His sermons were collected in five volumes entitled Peri Zaddik (1901–34).