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