Task: Assess the emotional content of the tweet and classify it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's mental state.
Tweet: Anger is cheap and politeness is expensive. Don't expect everybody to be polite. #ThoughtfulThursday  #politeness
This tweet contains emotions: 
optimism