Who said "Merlin's beard, you are a simple boy, aren't you?"?

This quote is attributed to Severus Snape.

Merlin's beard, you are a simple boy, aren't you? - Severus Snape

"Merlin's beard, you are a simple boy, aren't you?"

Severus Snape Humor

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

"Dunderheads. All of you. Particularly you, Potter."

"I can teach you how to bottle fame, brew glory, even put a stopper in death."

"One sip of this potion would make a man invincible."

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."