J.k. Rowling said this quote

“ A thousand years or more ago,When I was newly sewn,There lived four wizards of renown,Whose name are still well-known:Bold Gryffindor from wild moor,Fair Ravlenclaw from glen,Sweet Hufflepuff from valley broad,Shrewd Slytherin from fen.They share a wish, a hope, a dream,They hatched a daring plan,To educate young sorcerers,Thus Hogwarts school began.Now each of these four foundersFormed their own house, for eachDid value different virtues,In the ones they had to teach.By Gryffindor, the bravest werePrized far beyond the rest;For Ravenclaw, the cleverestWould always be the best;For Hufflepuff, hardworkers wereMost worthy of admission;And power-hungry SlytherinLoved those of great ambition.While still alive they did divideTheir favourates from the throng,Yet how to pick the worthy onesWhen they were dead and gone? 'Twas Gryffindor who found the way,He whipped me off his headThe founders put some brains in meSo I could choose instead!Now slip me snug around your ears,I've never yet been wrong,I'll have alook inside your mind And tell where you belong! ”