Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
Tweet: A cheerful heart is good medicine, but a crushed spirit dries up the bones. A wicked man accepts a bribe in secret to pervert  justice.
This tweet contains emotions: 
optimism, pessimism