When you know people are really at peace with who they are and what they do, they collaborate and want to help you to improve.
Life isn't so complicated for children. They have more time to think about the really important things. That's why I occasionally moralise in my children's books in a way I wouldn't dare when writing for adults.
Every theory presented as a scientific concept is just that; it's a theory that tries to explain more about the world than previous theories have done. It is open to being challenged and to being proven incorrect.

