This quote means sometimes JUST DOING THINGS to advance a goal is better than pondering on it:
….it doesn’t mean you shouldn’t stop and think, but if you’re feeling inspired you can start writing that article, buying that domain name, or making a mockup…and the motion helps you move forward.
For example this is just PART of my collection of useless domain names:
…but buying a $7 domain name is often the first step in helping me take a project seriously.
So what if I waste $200 in a year buying dumb domains? One success out of those can return 1,000x.
Some “motion” towards an idea will help you work on it faster.