The Great Garuda states:

Mind is such that it is never defined by extremes. It seems to everyone that the lower states of samsara exist, but in truth they do not, being like dreams, illusions, or castles in the sky. It is impossible for these false perceptions to carry the weight of truth.

Illusions carry only guilt and suffering, sickness and death to their believers. The form in which they are accepted is irrelevant. No form of misery in reason’s eyes can be confused with joy. Joy is eternal. You can be sure indeed that any seeming happiness that does not last is really fear. Joy does not turn to sorrow, for the eternal cannot change. But sorrow can be turned to joy, for time gives way to the eternal. Only the timeless must remain unchanged, but everything in time can change with time. Yet if the change be real and not imagined, illusions must give way to truth and not to other dreams that are but equally unreal. This is no difference

In dreams, effect and cause are interchanged, for here the maker of the dream believes that what he made is happening to him. He does not realize he picked a thread from here, a scrap from there, and wove a picture out of nothing. For the parts do not belong together, and the whole contributes nothing to the parts to give them meaning.

You will remember everything the instant you desire it wholly, for if to desire wholly is to create, you will have willed away the separation, returning your mind simultaneously to your Creator and your creations. Knowing them, you will have no wish to sleep but only the will to waken and be glad. Dreams will be impossible because you will want only truth, and being at last your will, it will be yours

You do not find the differences between what you see in sleep and on awaking disturbing. You recognize that what you see on waking is blotted out in dreams. Yet on awakening, you do not expect it to be gone. In dreams you arrange everything. People become what you would have them be, and what they do you order. No limit on substitution is laid upon you. For a time, it seems as if the world were given you, to make it what you will. You do not realize that you are attacking it, trying to triumph over it and make it serve you. Your wish to make another world that is not real remains with you. And what you seem to wake to is but another form of this same world you see in dreams. All your time is spent in dreaming. Your sleeping and your waking dreams have different forms, and that is all. Their content is the same. They are your protest against reality and your fixed and insane idea that you can change it. In your waking dreams, the special relationship [has a special place. It is the means by which you try to make your sleeping dreams come true. From this you do not awaken. The special relationship] is your determination to keep your hold on unreality and to prevent yourself from waking. And while you see more value in sleeping than in waking, you will not let go of it.