This is not a fast thought. From beyond organic farmer Joel Salatin:

"You know what the best kind of organic certification would be? Make an unannounced visit to a farm and take a good long look at the farmer's bookshelf. Because what you're feeding your emotions and thoughts is what this is really all about. The way I produce a chicken is an extension of my worldview. You can learn more about that by seeing what's sitting on my bookshelf than having me fill out a whole bunch of forms".

Quoted in Michael Pollan's must-read The Omnivore's Dilemma.