Writing a book makes you an expert in the field. At the very least, when you hand someone a book you wrote, it's more impressive than handing a business card.
James AltucherWhen people give you their stated reason for doing something always assume they are giving you a reason that sounds good, but not the real reason.
James AltucherYou can't make money without selling something real. You can't make something real without first imagination manifesting itself in your head. You can't have imagination without surrendering yourself to an idea that you want to create something of value to other human beings.
James Altucher