− | The sensory [[perception]] of light plays a central role in [[spirituality]] ([[vision]], enlightenment), and the presence of light as opposed to its absence (darkness) is a common Western [[metaphor]] of [[goodness|good]] and evil, [[knowledge]] and ignorance, and similar [[concepts]]. | + | The sensory [[perception]] of light plays a central role in [[spirituality]] ([[vision]], enlightenment), and the presence of light as opposed to its absence (darkness) is a common Western [[metaphor]] of [[goodness|good]] and [[evil]], [[knowledge]] and ignorance, and similar [[concepts]]. |