What can be detected by our five senses, including the people we meet and the surroundings we live in, all indeed seem very real. They are like what we experience in a dream, which is also vivid to us. When we have a dream at night, we still have a strong attachment to our surroundings. We cannot deny the existence of our dream when we are in the dream. However, when we wake up from the dream, we suddenly realize that the dream and everything in it were unreal.
～ Luminous Wisdom 3 : The Illusory World