Task: Determine the dominant emotion in the tweet and classify it as either 'neutral or no emotion' or one of the eleven provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Shantosh: How crazy would it be to walk past and talk to a person everyday never realizing he is suffering from depression or such? …
This tweet contains emotions: 
pessimism, sadness