Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: “We can easily #forgive a #child who is #afraid of the #dark; the real #tragedy of #life is when #men are #afraid of the #light.”–Plato
This tweet contains emotions: 
optimism