No man has the right to be an amateur in the matter of physical training. It is a shame for a man to grow old without seeing the beauty and strength of which his body is capable

- Socrates

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Codex on the flight of birds
By Leonardo da Vinci

ليوناردو بهاي المذكرات جان يحاول يفهم (بالصفحات الأولى) شلون تطير الطيور حتى (بالصفحات الأخيرة) يصمم آلة تساعد الإنسان بالطيران.

بجانب كل صفحة من المذكرات الأصلية أكو ترجمة للانكليزية

He was like a child, simply curious about everything for the sake of curiosity itself.

Also he was obsessive and weird enough to try designing a flying machine.