calibre than seems really feasible in this age; spirits rendered potent through wars and victories, to whom conquest, adventure, danger, even pain, have become a need; for such a consummation we need habituation to sharp, rare air, to winter wanderings, to literal and metaphorical ice and mountains; we even need a kind of sublime malice, a supreme and most self-conscious insolence of knowledge, which is the appanage of great health; we need (to summarise the awful truth) just this great health !