The paper focuses on the enigmatic thirteenth-century figure of R. Isaac of Rus’. A case study in the reconstruction of early East European Jewish history, it tests an integrative approach that brings together different types of evidence and disciplinary methods, while involving some new or neglected sources. Also examined are connections between Rabbi Isaac’s esoteric teachings and those of Ḥasidei Ashkenaz and related themes in contemporary and subsequent rabbinic literature.

中文翻译：

---

罗斯的拉比以撒和他的深奥教义

这篇论文的重点是 13 世纪神秘人物 R. Isaac of Rus。作为重建早期东欧犹太历史的案例研究，它测试了一种综合方法，该方法将不同类型的证据和学科方法结合在一起，同时涉及一些新的或被忽视的来源。还研究了拉比以撒的深奥教义与 Ḥasidei Ashkenaz 的教义以及当代和随后的拉比文学中的相关主题之间的联系。