Asa Gray, Letters of Asa Gray; Vol. 2
“ And there is Switzerland always within reach. Happy mortals, who can reach the Alps within forty-eight hours, and with only a narrow, though proverbially nasty, bit of water to cross! But what we hope to gain from this upturning is to see you over here. When Mr. Horner returns (we have heard nothing since they vanished in the West) he will tell you it is no formidable matter even to cross the continent. At least you can come and see us, make us a long visit, and be as quiet here as in a Swiss wayside inn, and sally forth upon an excursion when you like. ”
