But suppose for the sake of argument that every individual cooked their own food.

NPR: Scientist: Cooking Sets Us Apart From Apes

He often rode the bus to work, cooked his own meals and regularly visited the slums that ring Argentina's capital.

NPR: Argentine Jorge Bergoglio Elected Pope Francis

He also passed on a chauffeured limousine, preferring to take the bus with ordinary people, and he cooked his own meals.

CNN: Pope Francis to shun luxury papal apartment, for now

Preferring more modest accommodation, he also often cooked his own meals.

BBC: Pope Francis shuns grand apartment for two rooms

Known previously as Jorge Bergoglio, the 76-year-old often rode the bus to work, cooked his own meals and regularly visited the slums that ring Argentina's capital.

NPR: POPE LIVE: Pope Francis, An Argentine, Meets World

In Buenos Aires, Francis chose to live in an apartment rather than the archbishop's palace, passed on a chauffeured limousine, took the bus to work and cooked his own meals.

CNN: March 15, 2013 -- Updated 0736 GMT (1536 HKT)

Cardinal Jorge Mario Bergoglio had a reputation as a humble pastor who even in high office commuted to work by bus, lived in an apartment rather than an apostolic palace and cooked his own meals.

BBC: Humble Francis brings both change and continuity

He also chose to live in an apartment instead of the archbishop's palace, passed on a chauffeured limousine and cooked his own meals, CNN Vatican analyst John Allen wrote in a profile published by National Catholic Reporter.

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Much has been written about his disdain for earthly comforts -- he prefers the bus to a chauffeur-driven limousine and cooked his own meals until now -- but his activism on behalf of the poor has been just as much a hallmark of his life.

CNN: Argentina a complex crucible for Pope