a true sentence

A true sentence  As Hemingway said, start with a true sentence the roof of the school building, I can see from  where I sit on a cloudy day is grey as lead when lit up by sunlight that has broken through  the clouds, it turns silvery and pleasant to see That is, a true sentence about what I see, but it is not what I'm thinking is a love story that began a summer's day, lasted with its drama when days got shorter and the wind bitter leaves shrunk and fell on a rainy street The true sentence is the gripping sadness the knowledge that the best of my time has gone