OCyOptimism is a key ingredient for any successful human endeavour - and isnOCOt keeping Earth viable the greatest human endeavour we can ever undertake? It is a fortunate life if a person feels more optimistic than ever before. ThatOCOs me.OCO. Bob Brown, one of AustraliaOCOs most thoughtful and recognised public figures, shares stories and insights from both his public and private life in Optimism . Since retiring from public life, Bob Brown has had time to reflect on the events that have made an impression, the ideas that have caught his imagination, and the people that have stayed in his thoughts. Inspirational, big-hearted and impassioned, Optimism is a meditation on the great and the small, rich with metaphor and full of warmth. Here are stories from a life set for downfall that found its salvation in action: Bob BrownOCOs journey to a simple philosophy for happiness.