In The Furious Passions Of Norman Mailer at 10 Zen Monkeys, we find this anecdote from the lengthy feud between Mailer and Gore Vidal:

1974 found [Norman Mailer] sending this letter to Women’s Wear Daily.

“It has come to my attention that Gore Vidal has been speaking in your pages of my hatred of women. Let me present the following items.

Number of times married: Mailer 5, Vidal 0
Number of children: Mailer 7, Vidal 0
Number of daughters: Mailer 5, Vidal 0

These statistics of course prove nothing unless it is to suggest that the reason Vidal may have married no lady and fathered no child is due perhaps to his love of women and his reluctance therefore to injure their tender flesh with his sharp tongue.”