This oft-quoted line, attributed to Leonardo da Vinci, captures a recognizable human pivot: once we experience a higher vantage—literal or metaphorical—our attention tilts toward it thereafter. The world on the ground remains, yet the sky becomes a compass of desire. Such longing is not mere nostalgia; it is the mind reorganizing its priorities around a heightened sense of possibility. From this starting point, the path leads naturally to Leonardo’s own attempts to make the sky thinkable as a human domain. [...]
