Task: Categorize the tweet's emotional expression, classifying 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 reflect the tweeter's state of mind.
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