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: You can't fight the elephants until you have wrestled the pigs. #quoteoftheday #relentless
This tweet contains emotions: 
optimism