"I used to write words separate from U2. I believed that rock'n'roll wasn't the place for words. I didn't really begin spending a lot of time on lyrics until halfway into Eighties."
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The Popmart stage design, which looked like a supermarket, appealed to Bono as a supermarket, with its myriad choices and temptations, could function as a metaphor for U2's songs, as they often deal with the struggle between desire and faith.