“April prepares her green traffic light and the world thinks Go.”
John Mistletoe (1931) http://books.google.com/books?id=20pJAAAAMAAJ&q=%22April+prepares+her+green+traffic+light+and+the+world+thinks+Go%22&pg=PA61#v=onepage
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Christopher Morley 30
American journalist, novelist, essayist and poet 1890–1957Related quotes

“No doubt she was thinking, Who dressed this poor girl like a traffic light?”
Source: The Hidden Oracle

His observations on the "strange events in our solar system" and as to why the sky looked blue and red colour was used in traffic lights to signal to vehicles to stop.
When Prof Jayant Narlikar saw the sun rise in the west

“Travel light. She extended her arms to embrace her house, maybe the whole world.”
Source: The Brief Wondrous Life of Oscar Wao