Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: Sir, my concern is not whether God is on our side; my greatest concern is to be on God's side, for God is always right.' - Abraham Lincoln
This tweet contains emotions: 
joy, optimism, trust