In Greek, nostalgia means…

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“In Greek, “nostalgia” literally means “the pain from an old wound”. It’s a twinge in your heart, far more powerful than memory alone. This device isn’t a spaceship, it’s a time machine. It goes backwards and forwards, it takes us to a place where we ache to go again.”

– Don Draper, “The Wheel”

Wing structure if a hornet.. -Einstein

“The wing structure of the hornet, in relation to its weight, is not suitable for flight, but he does not know this and flies anyway.” -Albert Einstein
“La estructura de las alas de la avispa, en relación a su peso, no es apto para el vuelo, pero él no lo sabe y vuela de todos modos.”
«La structure de l’aile du frelon, par rapport à son poids, n’est pas adapté pour le vol, mais il ne sait pas et vole de toute façon.” wasp 2