Former pope Benedict XVI has publicly urged his successor
Pope Francis not to open the Catholic priesthood up to married men, in a plea that Sunday stunned Vatican experts.
The ex-pontiff, who retired in 2013, issued the defence of clerical celibacy in a book written with arch-conservative Cardinal Robert Sarah, extracts of which were published in exclusive by France's Le Figaro.
"I cannot keep silent!" Benedict wrote in the book, which follows an extraordinary meeting of bishops from the Amazonian at the Vatican last year that recommended the ordination of married men in certain circumstances.