The quote Pekka speaks whilst in the house is from "Twelfth Night" by 莎士比亚. "Duke Orsino: If music be the food of love, play on, / Give me excess of it; that surfeiting, / The appetite may sicken, and so die." - Twelfth Night: Act 1, Scene 1.
The Shakespearean quote used by Pekka in the garden is from "Macbeth" by 莎士比亚. "Macbeth: Life's but a walking shadow, a poor player / That struts and frets his hour upon the stage / And then is heard no more: it is a tale / Told by an idiot, full of sound and fury, / Signifying nothing." - Macbeth: Act V, Scene 5.
The quote Juhani speaks whilst lying in the "grave" is from "Hamlet" by 莎士比亚. "Hamlet: How weary, stale, flat, and unprofitable / Seem to me all the uses of this world! / Fie on 't, ah fie! 'Tis an unweeded garden / That grows to seed. Things rank and gross in nature / /Possess it merely." - Hamlet: Act 1, Scene 2.