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: A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty. \n― Winston S. Churchill #quote
This tweet contains emotions: 
optimism, pessimism