The world is a very simple world, an extremely simple world which is made out of concrete, plastic, wood, stones, greenery, pollution, and thin air. Actually every one of is is sitting or standing on that world. Shall we say this is the real world or should we pretend that the world is something else? You and I are both here. This is our world, here, right now.
From Journey without Goal: The Tantric Wisdom of the Buddha by Chögyam Trungpa, page 103