Gian-Carlo Rota over de stelling van Desargues en Zen

The proof of Desargues’s theorem of projective geometry comes as close as a proof can come to the Zen ideal. It can be summarized in two words: “I see!”
Gian-Carlo Rota, “The Phenomenology of Mathematical Proof”, Synthese, Vol. 111, No. 2 (mei 1997), pp. 183-196