The hope of finding a place in the brain that is the essence of a thought or feeling is as futile as trying to discover the most essential basis for the taste of a piece of milk chocolate. Remove the milk, the sugar, or the chocolate, and the usual sensory experience vanishes. The mind likes the notion of essences, but like the tooth fairy, nature failed to provide examples of this pleasing idea.

source: Jerome Kagan, An Argument for Mind, 222 tags: Neuroscience