From the book Mindfulness in Plain English -

"Mindfulness is an extremely difficult concept to define in words - not because it is complex, but because it is too simple and open. The same problem crops up in every area of human experience. The most basic concept is always the most difficult to pin down. Look at a dictionary and you will see a clear example. Long words generally have concise definitions, but for short basic words like 'the' and 'is', definitions can be a page long. And in physics, the most difficult functions to describe are the most basic - those that deal with the most fundamental realities of quantum mechanics. Mindfulness is a pre-symbolic function. You can play with word symbols all day long and you will never pin it down completely. We can never fully express what it is."

Feel free to tell me I'm completely wrong But it struck me that there is some interesting correlations. Thoughts?