Ninety-nine percent of the troubles that threaten our civilization come from too optimistic, therefore we should have a system where the accounting is a way more conservative.
You even harvest the whole world, if no one to share with you, you will feel sad.
A good book is a conversation between the author and the reader.
I always try to be positive, even in tough moments.
We need to design policies that work with human psychology, not against it.