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When the air balloon was first discovered, some one flippantly asked Dr. Franklin what was the use of it. The doctor answered this question by asking another: "What is the use of a new-born infant? It may become a man."

Charles Caleb Colton (1823). “Remarks on the Talents of Lord Byron and the Tendencies of Don Juan”, p.177
When the air balloon was first discovered, some one flippantly asked Dr. Franklin what was the use of it. The doctor answered this question by asking another: What is the use of a new-born infant? It may become a man.