Erica Jong, in her debut novel 'Fear of Flying' published 40 years ago, wanted to 'slice open a woman's head and show everything happening inside'.
The book, which is set for an anniversary re-release this year, became a sensation in 1973 and went on to shift more than 20 million copies in 40 different languages. But reaction to it also illustrated that the inside of a woman's head -- at least as Jong saw it -- could be a polarising place.
"You can tell when a book matters when people argue about it," the 71-year-old author and ardent feminist told AFP in an interview.
"Some people hate it, some people love it," she said of her debut novel. "I think that's what writers are made to do -- we're the earthworms, we aerate the soil. I'm proud of that."
The story of Isadora Wing, who is five years into her second marriage to a psychiatrist but laments that sex with him now brings "no thrill to the tastebuds, no bittersweet edge, no danger", struck a chord with millions.
In 1973, such uninhibited sexual frankness and liberal swearing from a female perspective caused a stir in the publishing world. In the book, Wing rages that "men have always defined femininity as a means of keeping women in line".
Jong says she had wanted to explore sex in the way Philip Roth and John Updike had done -- but from a female mindset. The difference in the way she was treated, she says, smacked of an inequality that continues to this day.
"I have come to understand what it's like to be a woman writer in a world in which women are still looked at as breasts and pussies," the typically blunt New York-born author said.
"I have learned from my journey that we are absolutely not equal yet."
When "Fear of Flying" turned 20 in 1993, she wrote that her aim had been to give a "rallying cry for women who wanted the right to have fantasies as rich and raunchy as those of men".
Some reviewers were scathing. American writer Paul Theroux referred to the character of Wing as a "mammoth pudenda".
Given how the story blurred fiction with autobiography, Jong said the experience of such criticism "was very stressful at the beginning, and in order to survive I developed a sense of humour about it".
Her website proudly explains how she "evidently lives by the liberal mores she advocates": she has been married four times -- with the Jong part of her name coming from her third marriage -- and her current husband is a divorce lawyer. She also has a daughter, writer and satirist Molly Jong-Fast.
Before her debut stole the limelight, Jong started out as an award-winning poet, publishing a collection of erotic poetry "Fruits and Vegetables" in 1971. She has written more than 20 books, including 10 works of fiction as well as non-fiction. She says her next novel is a comic take on death.
Of course much has changed since 1973, when "Fear of Flying" was published, and younger generations discovering the book for the first time are doing so in a world more accustomed to instant gratification.
"We have the hook-up culture now where people meet for 20 minutes and have perfunctory sex," said Jong. "But young women and young men are so disillusioned with it, because it turns out that anonymous sex is not very satisfying without any feeling.
"As people we like partners. Who cares if it's two men, two women, transsexuals, heterosexuals -- we are pair-making creatures so let's just remember our own humanity and let's have empathy for others with a different sexuality."
The publishing world, meanwhile, has changed beyond recognition. The success of E.L James' "50 Shades of Grey" or J K Rowling's Harry Potter series aside, the chances of achieving the sort of impact Jong did with her debut seem to be fast diminishing in an increasingly digital world.
"Publishers don't know which way the wind is blowing, they're very frightened," told AFP on the sidelines of last month's Hong Kong Book Fair.
She says she is frequently approached by younger readers who recognise her quotes from the Internet but who have not read her books.
"We have a different media now," she said. "But the narrative, that's the human thing. People will tell each other stories in order to understand their lives and that will not go away."
Besides, Jong was lucky enough to make an impact when the industry was in a very different shape.
"When I first started publishing I was getting these huge multi-million dollar advances," she told the Hong Kong forum.
"And then when they stopped coming I had not spent all the money, I was prudent.
"And then when publishing changed, I was lucky enough to be married to a lawyer. So whatever."