'In company such as this we must all elevate one another, for I carry no advantage on these men,' Huygens said. This triggered a long tedious volley of self-deprecations from Fatio and Waterhouse. But soon enough they all got their winter coats on and labored up a staircase devious and strait, and emerged into starlight. The only clouds in this sky were those that condensed in front of their lips as they breathed. Huygens lit up a clay pipe. Fatio, who had assisted Huygens before, took the wraps off the big Newtonian reflector with the tense precision of a hummingbird, keeping an ear cocked toward Huygens and Waterhouse, who were talking about optics, and an eye on Eliza, who was strolling around the parapet enjoying the view: to the east, the Haagse Bos, woolly and black with trees. To the south, the smoking chimneys and glowing windows of the Hofgebied. To the west, the windy expanse of the Plein, stretching to the Grenadier's Gate on the far side, which controlled access to the Binnenhof. A lot of wax and whale-oil was being burnt there tonight, to illuminate a soiree in the palace's Ballroom. To the young ladies who had been invited, it must have seemed never so glamorous. To Huygens it was a damnable nuisance, for the humid air snared the radiance of all those tapers and lamps, and glowed faintly, in a way that most people would never notice. But it ruined the seeing of his telescope.