Based upon the Ukrainian hierarchs’ epistolary legacy, the article analyzes characteristic features of Kyiv-Mohyla Academy intellectual space, which was created by Academy alumni of different generations and various hierarchy levels. The author establishes that the closest relations were between correspondents belonging to the same or almost same hierarchy level and who were bonded together by the Kyiv-Mohyla Academy educational system and school comradeship, eventually obtained high positions in the hierarchy. Communication within the boundaries of individual centers (the Kyiv-Mohyla Academy, the (...) Kyiv Pechersk Lavra, collegiums in Chernihiv, Kharkiv, and Pereiaslav, seats of Ukrainian bishops in Russia, etc.) depended on specificity of the environment. Predominant themes encountered in the letters of the Ukrainian bishops included needs of the alma mater, the Kyiv Academy, and the collegiums. The correspondence addressed issues of their legal status, academic staff, financial support, as well as the literary work and publishing activities of the hierarchs. (shrink)