I, too, think that Vladimir Soloviov is very important in Ada. I already mentioned him in several papers and am contemplating a separate essay dedicated to him (his narrative poem Tri Svidania, his memoir Na zare tumannoi iunosti and his ideas about Sophia). I may entitle it "On Immortality" (for, in my opinion, Ada is, inter alia, an attempt to demonstrate that we, or, at least, some of us, are immortal). VN certainly knew much of Soloviov's work, as well as K. Mochul'sky's book on him (Vladimir Soloviov. Zhizn' i uchenie. Paris, 1936. http://www.vehi.net/mochulsky/soloviev/index.html)

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