Terry Eagleton said this quote
“ Interestingly, this speech by Prospero does not contrast the unreality of the stage with the solid, flesh-and-blood existence of real men and women. On the contrary, it seizes on the flimsiness of dramatic characters as a metaphor for the fleeting, fantasy-ridden quality of actual human lives. It is we who are made of dreams, not just such figments of Shakespeare’s imagination as Ariel and Caliban. The cloud-capped towers and gorgeous palaces of this earth are mere stage scenery after all. ”