Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: “Optimism may sometimes be delusional, but pessimism is always delusional.” —Alan Cohen #believe
This tweet contains emotions: 
optimism