“How hard to realize that every camp of men or beast has this glorious starry firmament for a roof!…In such places standing alone on the mountain-top it is easy to realize that whatever special nests we make—leaves and moss like the marmots and birds, or tents, or piled stone—we all dwell in a house of one room—the world with the firmament for its roof—and are sailing the celestial spaces without leaving any track.”