Evaluate the valence intensity of the following snippet, considering the mood of the author. Give a score between 0 and 1 inclusive, where 0 is the most negative and 1 is the most positive.
Snippet: In Willa Cather's famous short story, ''Paul's Case,'' set in yesterday's New York, the hero takes a carriage ride down Fifth Avenue on a snowy night and marvels at ''stands with whole flower gardens blooming under glass cases, against the sides of which the snowflakes stuck and melted; roses, violets, carnations, lilies of the valley - somehow vastly more lovely and alluring that they blossomed thus unnaturally in the snow.''