Is it better to be extremely ambitious, or rather modest? Probably the latter is safer; but I hate safety, and would rather fail gloriously than dingily succeed.
We know what we have to do. And we know how to do it. If we fail to convert our self-destructing economy into one that is environmentally sustainable, future generations will be overwhelmed by environmental degradation and social disintegration. Simply stated, if our generation does not turn things around, our children may not have the option of doing so.