Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Keep in mind. We're all weak. Don't insult people just because they're human.
This tweet contains emotions: 
anger, disgust, optimism, sadness