...the cry of young people at the 2011 World Youth Day. And it sort of has two meanings: that the young people stand with the Pope, and are affirming their full loyalty to him, but also - an extra and unintended meaning - that the young share their youthful energy with the Holy Father and rejuvenate him with their joy and their affection and good humour.
You'll get something of the feel of that unforgettable Saturday night vigil if you watch here. The Pope was so splendid and joyful and amused by the sudden turn of events, undeterred by storm and wind. Enjoy.