"I wonder if one of Nabokov's objections to Bellow besides differing stylistic temperaments would not also include Bellow's penchant for the "philosophical" novel. Given Nabokov's distaste for other practitioners of the "philosophical" novel such as Camus, Sartre and Dostoevskii. In his STRONG OPINIONS, Nabokov was asked directly by an interviewer for his opinion of Saul Bellow's art, and the Maestro replied, "A puff of smoke."It's not that ideas don't matter to Nabokov. For instance, he greatly admired Bely's PETERSBURG which shows the influence of Bely's interest in theosophical and occult matters. However, Nabokov always asserted his preference for the supremacy of the author's style over any predeliction for moralising, pontificating or philosophying. Sometimes, it's simply a matter of taste. Note Nabokov's love of H.G.Wells' fantastic tales like THE TIME MACHINE (which he shared with another polymath, Jorge Luis Borges). On the other hand, a great writer and stylist like William Faulkner, whom I revere, Nabokov had no use for" - Alphonse Vinh.
" Bellow, to give him some voice in this discussion, disliked Nabokov's work because, he told me, "Nabokov makes a religion out of art." When I objected that this was simply a definition of romanticism, of which he himself was a practioner, Bellow replied with a twinkle, 'Yes, but I am more democratic'." - Priscilla https://listserv.ucsb.edu/lsv-cgi-bin/wa?A2=nabokv-l;4657bb62.0202
NABOKOV'S DISMISSALS - Naben Ruthnum (2006)
"Vladimir Nabokov’s talent for dismissing fellow writers led Saul Bellow to call him a “wicked wizard,” a subtle alliterative pun on Nabokov’s own description of Bellow as a “miserable mediocrity.” Bellow’s Nobel Prize did little to alter Nabokov’s opinion. From Nabokov, a master of detail and prose, we’d expect long and elegant vivisections of the respected authors he tosses away, some of them longstanding canonical authors." http://www.doppelgangermagazine.com/june/naben_ruthnum.html
"Nabokov finds it easier to write critically than to praise, though he would love to write a glowing piece about J. D. Salinger. Not about Saul Bellow, perhaps. Nabokov did not like Bellow’s most recent book.He rather likes Updike, though it was a mistake (he says) to make Bech Jewish; the result is that the clichés come out (explains Nabokov)." .http://www.nytimes.com/books/97/03/02/lifetimes/nab-v-magician.html Israel Shenker,1971