"The undiscovered country from whose bourn no traveler returns" is a quote from which play by Shakespeare?

Early in William Shakespeare's play "Hamlet" (Act 3, scene 1), it is Hamlet who says, "The undiscovered country from whose bourn no traveler returns". This is a statement made by Hamlet after he sees his father's ghost.

Here, it is clear that Hamlet is contemplating suicide and its consequences. He wants to do what is right in light of all the circumstances. Thus, he is trying very hard to cling to traditional ideas about “what dreams may come” in the sleep of death, about the “canon” that is “fixed against self-slaughter”.

It really becomes very clear that Hamlet is grieving and tormented and unsure if he can even trust his senses. What may be a demon or hallucination is goading him to murderous revenge. He wants to believe and doesn't; life and death are before him, and both concerned with terrible uncertainty and unreality.

One might say Hamlet is suffering from mental and emotional stress. He is a living and breathing human being who has hard choices to make. He will in the end make the hard decisions.

The keynotes of this play are uncertainty, indecision, the difficulty of knowing what is or may be real. Nonetheless, actions have to be taken. They are!