Who said "There's a nice knock-down argument for you!"?

This quote is attributed to Tweedledee and Tweedledum.

There's a nice knock-down argument for you! - Tweedledee and Tweedledum

"There's a nice knock-down argument for you!"

Tweedledee and Tweedledum Humor

Character in Through the Looking-Glass

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"We call it a Bread-and-Butterfly."

"If it was so, it might be; and if it were so, it would be; but as it isn't, it ain't. That's logic."

"Contrariwise, if it was so, it might be."

"We must have a bit of a fight, but I don't care about going on long."

"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."