The real thing? Reality,

The real thing?
Reality, at first glance, is a simple thing: the television speaking to you now is real. Your body sunk into that chair in the approach to midnight, a clock ticking at the threshold of awareness. All the endless detail of a solid and material world surrounding you. These things exist. They can be measured with a yardstick, a voltammeter, a weighing scale. These things are real. Then there's the mind, half-focused on the TV, the settee, the clock. This ghostly knot of memory, idea and feeling that we call ourself also exists, though not within the measurable world our science may describe. Consciousness is unquantifiable, a ghost in the machine, barely considered real at all, though in a sense this flickering mosaic of awareness is the only true reality that we can ever know. The Here-and-Now demands attention, is more present to us. We dismiss the inner world of our ideas as less important, although most of our immediate physical reality originated only in the mind. The TV, sofa, clock and room, the whole civilisation that contains them once were nothing save ideas.

from Alan Moore via Random Walks