Vladimir Arnold wrote that Andrei Kolmogorov told him the names of the two mathematicians in conversation with whom he "feels the presence of higher intelligence". One of them is Israel Gelfand.
Who is the second one?
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It is indeed the author. In an interview (see page 41) Arnold is more explicit:
он [Gelfand] был, как и я, учеником Колмогорова – Андрей Николаевич говаривал даже, что «только в беседах с этими двумя учениками испытывал ощущение присутствия высшего разума»
... Gelfand, like me, was Kolmogorov's student - Andrey Nikolayevich even used to say that "only talking to those two students he experienced presence of higher intelligence.