Гарри Поттер и узник Азкабана

           ProfessorLupincontinued,"ThePatronusisakindofpositiveforce,aprojectionoftheverythingsthattheDementorfeedsupon—hope,happiness,thedesiretosurvive—butitcannotfeeldespair,asrealhumanscan,sotheDementorscan’thurtit.ButImustwarnyou,Harry,thatthecharmmightbetooadvancedforyou.Manyqualifiedwizardshavedifficultywithit."

           "WhatdoesaPatronuslooklike?"saidHarrycuriously.

           "Eachoneisuniquetothewizardwhoconjuresit."

           "Andhowdoyouconjureit?"

           "Withanincantation,whichwillworkonlyifyouareconcentrating,withallyourmight,onasingle,veryhappymemory."

           Harrycasthismindaboutforahappymemory.Certainly,nothingthathadhappenedtohimattheDursleys’wasgoingtodo.Finally,hesettledonthemomentwhenhehadfirstriddenabroomstick.

           "Right,"hesaid,tryingtorecallasexactlyaspossiblethewonderful,soaringsensationofhisstomach.

           "Theincantationisthis—"Lupinclearedhisthroat."Expectopatronum!"

           "Expectopatronum,"Harryrepeatedunderhisbreath,"expectopatronum."

           "Concentratinghardonyourhappymemory?"

           "Oh—yeah—"saidHarry,quicklyforcinghisthoughtsbacktothatfirstbroomride."Expectopatrono—no,patronum—sorry—expectopatronum,expectopatronum"

           Somethingwhooshedsuddenlyoutoftheendofhiswand;itlookedlikeawispofsilverygas.

           "Didyouseethat?"saidHarryexcitedly."Somethinghappened!"

           "Verygood,"saidLupin,smiling.