I must be cruel, only to be kind: / Thus bad begins, and worse remains behind.
Act III, Scene 4 · Hamlet
Context
As Hamlet prepares to leave, he justifies his harsh treatment of Gertrude by saying he must be cruel now in order to ultimately be kind. He acknowledges that things are bad and will get worse before they improve.
Analysis
The oxymoron 'cruel...to be kind' compresses two opposed values into one phrase, forcing them to coexist without resolution. Hamlet frames his verbal violence as a form of moral medicine—painful but necessary—yet the second line ('Thus bad begins, and worse remains behind') undercuts the hopeful spin: he admits there is no clear path from cruelty to kindness, only escalation. The rhyming couplet gives the statement a proverbial feel, as if Hamlet is trying to convince himself as much as Gertrude.
Essay Tip
Use this to argue that Hamlet's self-justification is unstable—he wants to believe his cruelty serves a higher purpose, but his own words admit he cannot control the outcome or guarantee that harm will lead to healing.