Task: Determine the degree of intensity for emotion E in the tweet, giving it a score between 0 and 1, where 0 signifies the least intensity and 1 signifies the greatest intensity.
Tweet: 'The point of living, and being an optimist, is to be foolish enough to believe the best is yet to come' - Peter Ustinov #optimism #quote
Emotion: joy
Intensity score: 