Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Don't ever grow weary doing good....Don't just see the headlines; look at the trend lines for hope.' @billclinton #CGI2016
This tweet contains emotions: 
optimism