★★★★ An orange flash of sunrise came off a building to the west and through a crack in the blinds. The morning was cool still but humid. The uptown train came to a stop with a wash of heat across the platform, raising a sweat. On the ride downtown, a couple carried matching beach chairs. Every line of mortar was distinct in the upper-story brickwork. By midday, up on the roof, the sun was hot. It was pleasant to let it pin the body down in a chair, to feel the black plastic hot but not hot enough to hurt through a shirt. One eye had to stay squinted shut for a while, till acclimation set in. A blue-white haze enfolded an airplane and tinted the Freedom Tower; a blue-white glow flooded the retinas. By rush our the streets were shady and cool again, with a breeze moving through them. Dazzling beams of light came through gaps in the buildings without warning. The sun went down behind a line of bright-rimmed blue clouds, with nacreous ones above.