Task: Gauge the level of intensity for emotion E in the tweet, assigning it a score between 0 and 1. A score of 0 indicates the lowest intensity, while a score of 1 indicates the highest intensity.
Tweet: No pessimist ever discovered the secret of the stars,or sailed to an uncharted land,or opened a new doorway for the human spirit.-H.Keller
Emotion: sadness
Intensity score: 
0.271