This seems a strangely specific anniversary to celebrate… Aristotle was a Greek philosopher and polymath whose writings in the 4th century BC spanned physics and metaphysics (as noted on the stamp) but also biology, zoology, poetry, theatre, ethics, economics, philosophy, government and pretty much anything else you can think of. He has been uniquely influential over Western philosophy, providing it with its language, its modes of enquiry and its ways of setting out problems. His may be one of the longest Wikipedia entries that I’ve ever linked to, simply because he covered so much ground in his thinking and writing. For an equally enlightening version of his life and teachings, try the Crash Course link below (which covers both Plato and Aristotle).
https://en.wikipedia.org/wiki/Aristotle
Stamp of the Day 