Definition.com
A Dream (n.) gives every sane man nightly what the insane believe while awake.
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A Dream (n.) is a painting: however fantastic its sirens and satyrs, the colors it is painted with must be real.
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A Dream (n.) no longer threatens knowledge once the rule is found: even if I am dreaming, what is clearly presented to my intellect is true.
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A Dream (n.) is what memory cannot connect: its scenes do not join each other or the rest of life the way waking events do.
Definition.com
A Dream (n.) cannot be told from waking by any sure sign, and the feeling of being dazed only reinforces the notion that I may be asleep.