Who said "There is no greater illness than boredom."?

This quote is attributed to King Azaz.

There is no greater illness than boredom. - King Azaz

"There is no greater illness than boredom."

King Azaz Happiness

Character in The Phantom Tollbooth

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"Words can be commended, debased, or ignored, but they cannot be reversed."

"You can never be too careful when choosing the words you use."

"Words are such wonderful things."

"Let me see your mind."

"Babalú!"

"My greatest joy is making people smile."

"Laughter and love make a home."

"The best things in life are free."