Task: Analyze the tweet's emotional connotations and classify it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best portray the tweeter's mental state.
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