Task: Assess the emotional content of the tweet and classify 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 best represent the tweeter's mental state.
Tweet: @charles_gaba No, I am probably the person most likely to completely understand how gobsmacked you were to learn how true that is. #sadly
This tweet contains emotions: 
pessimism, sadness