The virtuous man contents himself with dreaming that which the wicked man does in actual life.
dreamingquotes
Dreaming, in short, is one of the devices we employ to circumvent repression, one of the main methods of what may be called indirect representation in the mind.
dreaming / mind / Representation / repression
The process of dreaming transfers psychical intensity from what is important, but also objectionable, onto what is insignificant.
But I cannot forget that, at other times I have been deceived in sleep by similar illusions; and, attentively considering those cases, I perceive so clearly that there exist no certain marks by which the state of waking can ever be distinguished from sleep, that I feel greatly astonished; and in amazement I almost persuade myself that I am now dreaming.