In the introduction to the book he calls Ayn Rand's work 'tawdry and third rate'.
It's interesting that for a discussion on the 100 most influential books of all time he felt he needed to address Ayn Rand at all. Assuming he thinks she was not influential.
Like Lao-Tzu for all he knew, but my expectation is that he couldn't have maintained an intellectual debate with her for more than 3 minutes. Besides, he didn't bother to evaluated the content of any of the works on his list(else wise he might have eliminated Kant, Hegel, Nietzsche, Chomsky and Skinner. The qualifier here seems to be the word, "Influential."
So, Mr. Seymour seems to have negated his own credibility and that of his list via his selective 'objectivity.'
What makes a book "third rate" as opposed to "second rate"?