"I think you have an obligation to be an optimist. Because if you're not, nothing will change"

In this quote, Ron Silver is stressing the value of having a favorable outlook on life. He thinks that it is our responsibility to be optimistic, as it is the only method to cause modification. If we constantly concentrate on the unfavorable aspects of a situation, we will never ever be encouraged to do something about it and make a difference. By being optimistic, we are able to see the capacity for enhancement and are more likely to take steps towards accomplishing it. Silver is recommending that optimism is not simply an individual choice, but a moral obligation to create a better world.