"We're trying our best to avoid saying 'I don't know' to visitors."

Xia Kejia, Director of the World Expo site volunteer department

"Taking the theme 'Better City, Better Life,' you have chosen to make the 2010 Shanghai Expo an event resolutely focused toward the future."

French President Nicolas Sarkozy, in an interview with Xinhua News Agency on April 27

"Today, there are few traces of the war in Okinawa. But U.S. bases still remain in front of us. This is so unfair."

Hirokazu Nakaima, Governor of Okinawa, speaking at a rally on April 25 to demonstrate against U.S. military presence on the Japanese island

"A free market was never meant to be a free license to take whatever you can get, however you can get it. That is what happened too often in the years leading up to the crisis."

U.S. President Barack Obama, calling for new rules governing the financial industry before a legislation to rein in Wall Street was blocked in Senate on April 26

"We inherited a ship that was ready to sink."

George Papandreou, Greek Prime Minister, blaming the previous administration for the country's economic crisis. Greece has asked for the activation of a joint EU-IMF bailout

"We only have to look at ourselves to see how intelligent life might develop into something we wouldn't want to meet."

Stephen Hawking, British astrophysicist, claiming in an upcoming series for the Discovery Channel that aliens probably exist and that humans should avoid making contact with them

"I've done enough science fiction to know that our Earth will survive through various nightmare scenarios. But that's entertainment. This is real and as citizens we have to act now."

U.S. actress Sigourney Weaver, at a Senate hearing on ocean acidification on Earth Day on April 22