Why did Ray Bradbury use the quote Time has fallen asleep in the afternoon sunshine in his novel?

isn't it a beautiful quote?

i think he's saying something about time not being the most important thing. Its in contrast to the situation Montag's in, where the firemen are just rushing about to get the books out and then to burn them. But its also in contrast to the lifestyles of the people n the Fahrenheit society, where they rush about doing mindless things like watching shows and racing cars etc. They don't stop and pause to think, not like Clarisse.