"It is our choices, Harry, that show what we truly are, far more than our abilities." - Albus Percival Wulfric Brian Dumbledore

Everyone agrees that Dumbledore is wise, however, no-one ever seems to say J.K.Rowling is wise. It was her who wrote dows Albus' words of wisdom. It was her who said those many wise words. 

"A character is only as wise as it's author" -E.K.Williams