Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: It is important to seek peace, even in the midst of a horrific war #CreateSyria  @intalert #TalkingPeace #buildingpeace
This tweet contains emotions: 
optimism