"It is true that the Vatican is the last absolute monarchy in Europe," he writes in it, according to the pre-publication of some passages that were published in the Italian daily newspaper"Corriere della Sera" on Thursday.
In the 2013 conclave at which he was elected pope, there was a great desire to "change things, to abandon certain attitudes that unfortunately still do not disappear today", Francis writes and laments: "There are always those who try to put the brakes on reform, those who would prefer to remain stuck in the times of the Pope-King."
The book was written by 87-year-old Francis together with journalist Fabio Marchese Ragona.
It will be published by Harpercollins on 19 March in several languages in the USA and Europe.
A German version will also be published on this day under the title "Leben. My story in history" will also be published on this day.
The Pope writes about the history of his family, who emigrated from Italy to Argentina after the First World War, about his girlfriend and a crush he had as a young man, but above all about events in world history and how he experienced them.
"Never thought about resigning"
The Pope writes about his recent hospitalisations, saying that they are human and "there is no reason to be shocked".
When he is in hospital, many thoughts go through his mind, "and there are also those who speculate for their own benefit or for profit in the newspapers. Fortunately, despite the difficult moments, I never thought about resigning."
However, as in the past, Francis also emphasises that this would change "if a serious physical disability were to occur".
In this case, he deposited a signed letter of resignation with the Secretariat of State at the beginning of his pontificate.
If this were to happen, he would not want to call himself Pope Emeritus, "but simply Bishop Emeritus of Rome".
However, this is a "distant hypothesis".
"Thank God I am in good health," the book says.
In it, Pope Francis renews his appeal against abortions. "I never tire of saying that abortion is murder, a criminal offence, there are no other words," writes Francis.
The Pope also condemns surrogacy as "an inhumane and increasingly widespread practice that threatens the dignity of men and women and treats children as commodities".