Who said "Imagination is the only cage they couldn't lock."?

This quote is attributed to Nebula.

Imagination is the only cage they couldn't lock. - Nebula

"Imagination is the only cage they couldn't lock."

Nebula Imagination

"I didn't ask for this life."

"You're welcome."

"I will kill you slowly."

"Gamora may have stolen your money, but I will steal your life."

"Imagination is more powerful than knowledge."

"The world is full of wonders if you know where to look."

"You have the imagination of a child, Lucy"

"The world is full of mysteries waiting to be solved."