The Pope also urged the world to safeguard the environment for future generations.
He told a gathering of 150,000 youths in Sydney that they were inheriting a planet whose resources had been 'scarred to fuel insatiable consumption'.
"Reluctantly we come to acknowledge that there are also scars which mark the surface of our earth, erosion, deforestation, the squandering of the world's mineral and ocean resources in order to fuel an insatiable consumption," he said.
Image: Pope Benedict enjoys a cruise at the Sydney Harbour.
Photographs: Rick Rycroft-Pool/Getty Images
Also read: The day that changed Mahendra Pitale's life