Whatever the universe be in human experience, it is, in important ways, like a dream... To the unenquiring mind it vividly is what it seems to be, but to the awakened insight of the sage its form presents itself like a more enduring version of the transient form of a dream world. Both forms are thought-constructions. Both have Mind as their underlying substance. Therefore Mind is their reality. Apart from Mind the world could not even exist, just as apart from the dreamer his dream could not exist.