HAMLET
ACT II, Scene 2 (Lines 258-275)
HAMLET: Let me question more in particular: what have you, my good friends, deserved at the hands of fortune, that she sends you to prison hither?
GUILDENSTERN: Prison, my lord!
HAMLET: Denmark's a prison.
ROSENCRANTZ: Then is the world one.
HAMLET: A goodly one; in which there are many confines, wards and dungeons, Denmark being one o' the worst.
ROSENCRANTZ: We think not so, my lord.
HAMLET: Why, then, 'tis none to you; for there is nothing either good or bad, but thinking makes it so: to me it is a prison.
ROSENCRANTZ: Why then, your ambition makes it one; 'tis too narrow for your mind.
HAMLET: O God, I could be bounded in a nut shell and count myself a king of infinite space, were it not that I have bad dreams.