Please analyze the tweet "Being alone is better than being lonely. Know what is worse than being lonely? Being empty; that's right!\n#Loneliness #aloneinthecity #fear" and classify its emotional content. Choose from the following emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If no emotions are detected, respond with "neutral or no emotion".
fear, sadness