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: We musn't allow bitterness and anger to make our hearts infertile to God’s gifts.
This tweet contains emotions: 
anger, joy, optimism