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: 5 person of renown cheerful expectation solutions-pleasure principle back: HsNHZMJSc
This tweet contains emotions: 
joy, optimism