“A dream is by definition a series of sensations that occur in the brain when both our senses of perception and our powers of will and reason are in abeyance, so that we have no control over that flux of sensations. But it is, of course, a well-known phenomenon that when we dream that we are dreaming, the dream ends and we awaken. Then the conscious mind takes over and we are again responsible for our thoughts, and must face a day in which we must be responsible for our actions, which, by their wisdom or folly, may determine the rest of our lives. Our dreams may give expression, pleasant or painful, to our subconscious desires or fears. But in our waking hours we must, if we are rational, make our decisions on the basis of the most objective and cold-blooded estimates that we can make: estimates of the forces and tendencies in the world about us; estimates of the realities with which we must deal; remembering always that nothing is likely to happen just because we think it's good, or unlikely to happen just because we think it's evil.”

Source: Questions of Travel

Source: The Butterfly as Companion: Meditations on the First Three Chapters of the Chuang-Tzu
Context: How do I know that enjoying life is not a delusion? How do I know that in hating death we are not like people who got lost in early childhood and do not know the way home? Lady Li was the child of a border guard in Ai. When first captured by the state of Jin, she wept so much her clothes were soaked. But after she entered the palace, shared the king's bed, and dined on the finest meats, she regretted her tears. How do I know that the dead do not regret their previous longing for life? One who dreams of drinking wine may in the morning weep; one who dreams weeping may in the morning go out to hunt. During our dreams we do not know we are dreaming. We may even dream of interpreting a dream. Only on waking do we know it was a dream. Only after the great awakening will we realize that this is the great dream. And yet fools think they are awake, presuming to know that they are rulers or herdsmen. How dense! You and Confucius are both dreaming, and I who say you are a dream am also a dream. Such is my tale. It will probably be called preposterous, but after ten thousand generations there may be a great sage who will be able to explain it, a trivial interval equivalent to the passage from morning to night.

Source: The Fires of Heaven

Fourth Lecture, p. 74.
The Psychology of Man's Possible Evolution (1950)

Niafer, in Book Ten : At Manuel's Tomb, Ch. LXIX : Economics of Jurgen
The Silver Stallion (1926)

Source: Glory Season (1993), Chapter 24 (p. 442)

Source: The Mummy