Why, then 'tis none to you; for there is nothing either good or bad but thinking makes it so.
Act II, Scene 2 · Hamlet
Context
When Rosencrantz suggests Hamlet's ambition makes Denmark feel like a prison, Hamlet replies that perception shapes reality.
Analysis
The phrase 'thinking makes it so' places the burden of meaning entirely on the subject, denying any objective standard of good or bad. This is a philosophically radical claim—it erases the possibility of shared moral reality, leaving each person isolated in their own interpretation.
Essay Tip
Use this to argue that Hamlet's philosophical skepticism paralyzes him—if nothing is inherently good or bad, then no action can be clearly justified, which traps him in endless deliberation.