Panglossian

Prince Stephen grieved in the dungeon.  His father was slain and his mother’s screams still echoed in his ears.  “We’ll get the kingdom back” chimed the little servant boy who was arrested with the prince.  This initially annoyed Stephen, but with time, he came to appreciate the boy’s Panglossian comments. 

Panglossian
adjective 
characterized by or given to extreme optimism, especially in the face of unrelieved hardship or  adversity.