This whole world is mind’s world. By meditating we are dealing with the very mind that devised our eyeglasses and put the lenses in the rims. So this is a living world, mind’s world. When we realize this, working with mind is no longer a remote or mysterious thing to do. It is no longer dealing with something that is hidden or somewhere else. Mind is right here. Mind is hanging out in the world. It is an open secret.
From Chögyam Trungpa’s “The Four Foundations of Mindfulness” in A Beginner’s Guide to Meditation: Practical Advice and Inspiration from Contemporary Buddhist Teachers, page 38