Who said "The imagination is the only frontier left to conquer"?

This quote is attributed to Hiro Protagonist.

The imagination is the only frontier left to conquer - Hiro Protagonist

"The imagination is the only frontier left to conquer"

Hiro Protagonist Imagination

Character in Snow Crash

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"I can't even think straight"

"She's got some killer software running"

"The real problem is that he's boring"

"The metaverse makes this place look like a parking lot"

"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."