One glorious and balmy summer weekend in the late 1990s, I sat in the house my parents built for their retirement, enjoying the spectacular view of Gardiner’s Bay. A flotilla of sailboats lilted in the wind, guided by red buoys that demarcated a channel in the otherwise shallow waters. My gaze shifted southeast, toward Napeague, the spit of land that separates the bay from the ocean. The air was so clear that beyond Napeague I could see cobalt and sapphire streaks of horizon. Giant, precise brushwork heralding the Atlantic.