The quote by John Boyne from The Boy in the Striped Pajamas suggests that merely observing the sky at night does not make someone an expert or scientist in astronomy. It emphasizes that observation alone is not enough; understanding and knowledge are necessary to truly be considered an astronomer. Engaging deeply with the subject, studying the science behind what is observed, and developing expertise are essential steps beyond simple observation. The quote highlights the difference between casual interest and professional or scientific involvement.

That one contemplates the sky at night does not make it an astronomer.