Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
Tweet: The object of literature is to make man a wiser and happier being. The poet makes us happy because he tells us how we may become so.
This tweet contains emotions: 
joy, optimism, trust