Instruct: Classify a given review into positive or negative sentiment.
Query: Mild disappointment

I am a great admirer of John W. Gardner. I especially liked On Excellence and On Leadership. I did not find much to help me in Self-Renewal. I think his observations and opinions are valid and interesting. I found little to give me hope that democracy can renew itself sufficiently to address the civilization threatening issues of catastrophic climate change, declining oil production, and religious/resource wars.