our little life is rounded with a sleep

[kingston_123]

While watching the final output of the film, Actor Olivier says to his third assistant director, Colin about Marilyn Monroe's beauty:

You do look, my son, in a moved sort As if you were dismay'd. Be cheerful, sir. Our revels now are ended. We are such stuff as dreams are made on, and our little life is rounded with a sleep...".

What is the meaning of "our little life is rounded with a sleep"?
Does it mean whole human life is just a dream?

Source: My Week with Marilyn (2011)

 

[GoesStation]

Our brief life ends in death, which Shakespeare (quoted here from The Tempest) calls something like a perpetual sleep. In Hamlet he writes this about death: "to sleep, perchance to dream ... for in this sleep of death, what dreams may come ...."