Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Do not grow weary of doing good' a lasting legacy @billclinton @ClintonGlobal #CGI2016 #thankfulmoment @ProjectThankful
This tweet contains emotions: 
joy, optimism