Pope Francis has said at his first audience at the Vatican the Church should be poor and remember that its mission is to serve the poor.
Speaking mostly off-the-cuff and smiling often, the pope explained why he chose to take the name Francis, after St. Francis of Assisi, a symbol of peace, austerity and poverty.
He called Francis "the man who gives us this spirit of peace, the poor man", and added: "Oh, how I would like a poor Church, and for the poor."
Since his election on Wednesday as the first non-European pope in nearly 1,300 years, Francis has signalled a sharp change of style from his predecessor Benedict.
He recalled that when he passed the two-thirds majority needed to elect him at the conclave Claudio Hummes of Brazil hugged and kissed him and told him "Don't forget the poor."
"That word entered here," he added, pointing to his head.
While the formal voting continued, the pope recalled: "I thought of wars .... and Francis (of Assisi) is the man of peace, and that is how the name entered my heart, Francis of Assisi, for me he is the man of poverty, the man of peace, the man who loves and protects others."
It was the latest indication that the pope wanted the worldwide Church to take on an austere style.
On the night he was elected he shunned the papal limousine and travelled on a bus with other cardinals. He went to the Church-run hotel where he had been staying before the conclave and insisted on paying the bill.
Francis, the former Cardinal Jorge Bergoglio, has also urged Argentines not to make costly trips to Rome to see him but to give the money to the poor instead.
St. Francis of Assisi, who died in 1226, renounced his family's fortune for a life of charity and poverty and is also revered by environmentalists because he loved nature and preached to animals.
Vatican denies accustations
The Vatican has strongly denied accusations by some critics in Argentina that Francis stayed silent during systematic human rights abuses by the former military dictatorship in his home country.
Spokesman Father Federico Lombardi told reporters on Friday that the accusations "must be clearly and firmly denied".
Critics of Bergoglio, the former Archbishop of Buenos Aires, allege he failed to protect priests who challenged the dictatorship earlier in his career, during the 1976-1983 "dirty war", and that he has said too little about the complicity of the Church during military rule.
The new pope's outgoing nature and sense of humour differs notably from the much more formal Benedict, who last month became the first pope in 600 years to resign.
On Friday, Francis hugged cardinals, slapped them on the back, broke into animated laughter and blessed religious objects one cardinal pulled out of a plastic shopping bag.
The Vatican said Francis would visit Benedict on 23 March at the papal summer residence south of Rome where the former pontiff will live until he moves into a convent in the Vatican which is undergoing renovations.