I like this quote. Even if fairies and dragons and mythical stuff like only exists in your mind, that's fine. He's basically trying to say that imagination is important. Albert Einstien said the same thing. Infact he said that imagination is more important then knowledge, in which I agree with as well. Honestly I think that if you are happy in life, then it doesn't matter what you do or how you think, your enjoying life which is something everyone should be doing. And it doesn't matter how you enjoy life, as long as your enjoying life.