Please analyze the tweet "There is no dark side in the moon. In fact, it's all dark.'\nGerry O'Driscoll at the end of 'The Dark side of the Moon'" 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".
anticipation, pessimism