What does Macbeth mean by all is but toys?

Macbeth's line, "All is but toys: renounce the world;" (act IV, scene 1) expresses his disillusionment and despair as he reflects on the fleeting nature of life and the emptiness of his pursuit of power and glory.

The phrase "all is but toys" means that everything in the world, including his achievements and ambitions, is insignificant and transient. These things are depicted metaphorically as "toys," suggesting their trivial and ephemeral nature.