The Secret of Unity: Unifications in the Kabbalistic and Hasidic Thought of R. Hayyim ben Solomon Tyrer of Czernowitz, בסוד היחוד: היחודים בהגותו הקבלית-חסידית של ר' חיים בן שלמה טירר מטשרנוביץ, by Ron Wacks, (Sources and Studies in the Literature of Jewish Mysticism 19; 2006, 320 pages, ISBN 1-93379-04-09, in Hebrew). This book is a study of the thought of R. Hayyim ben Solomon Tyrer of Czernowitz (1760?-1817?), one of the most prominent rabbis of eastern Galicia and the adjoining regions in the late eighteenth and early nineteenth centuries. He gained renown primarily during the eighteen-year period in which he served as rabbi in Czernowitz, in Bukovina. His works include: Sidduro shel Shabbat, Sha‘ar ha-Tefillah, Be’er Mayyim Hayyim; Eres Hayyim, and Teshuvah be-‘Inyan ’Amirat Le-Shem Yihud. The study is divided as follows: (1) The Life and Works of R. Hayyim; (2) Unifications in Kabbalah and Hasidism; (3) Models of Unifications in the Thought of R. Hayyim; (4) The Modes of Incorporation of the Models in Various Realms.
