Who said "Unless they've found another way in, which I doubt."?

This quote is attributed to Albus Dumbledore.

Unless they've found another way in, which I doubt. - Albus Dumbledore

"Unless they've found another way in, which I doubt."

Albus Dumbledore

Character in Harry Potter and the Prisoner of Azkaban

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"It is our choices that show what we truly are, far more than our abilities."

"Happiness can be found even in the darkest of times, if one only remembers to turn on the light."

"The past cannot be changed. The future is yet in your power."

"We are only as sick as our secrets."