Who said "Loyalty is a valuable commodity in this world."?

This quote is attributed to Albus Dumbledore.

Loyalty is a valuable commodity in this world. - Albus Dumbledore

"Loyalty is a valuable commodity in this world."

Albus Dumbledore

Character in Harry Potter and the Order of the Phoenix

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

"Ignorance is not bliss, it is just ignorance."

"Do not pity the dead, Harry. Pity the living, and above all those who live without love."

"Understanding is a three-edged sword: your side, my side, and the truth."