Task: Evaluate the tweet for emotional cues and classify 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 indicate the tweeter's state of mind.
Tweet: “Optimism may sometimes be delusional, but pessimism is always delusional.” —Alan Cohen #believe
This tweet contains emotions: 
optimism