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: @mdthib This is so lovely! Or I am frightened, not sure which! But, wow!
This tweet contains emotions: 
fear, joy, optimism