"My mind has been, since leaving England, in a perfect _hurricane_ of delight and astonishment, and to this hour scarcely a minute has passed in idleness.... Geology carries the day; it is like the pleasure of gambling. Speculating, on first arrival, what the rocks may be, I often mentally cry out, three to one tertiary against primitive; but the latter has hitherto won all the bets.... My life, when at sea, is so quiet, that to a person who can employ himself, nothing can be pleasanter; the beauty of the sky and brilliancy of the ocean together make a picture. But when on shore, and wandering in the sublime forests, surrounded by views more gorgeous than Claude ever imagined, I enjoy a delight which none but those who have experienced it can understand. If it is to be done, it must be by studying Humboldt. At our ancient snug breakfasts, at Cambridge, I little thought that the wide Atlantic would ever separate us; but it is a rare privilege that with the body, the feelings and memory are not divided. On the contrary, the pleasantest scenes of my life, many of which have been at Cambridge, rise from the contrast of the present the more vividly in my imagination." From Valparaiso, after he had been two years on the voyage, he writes to a friend: "That this voyage must come to a conclusion my reason tells me, otherwise I see no end to it. It is impossible not bitterly to regret the friends and other sources of pleasure one leaves behind in England; in place of it there is much solid enjoyment, some present, but more in anticipation, when the ideas gained during the voyage can be compared with fresh ones. I find in Geology a never-failing interest, as it has been remarked, it creates the same grand ideas respecting the world which astronomy does for the universe. We have seen much fine scenery; that of the tropics in its glory and luxuriance exceeds even the language of Humboldt to describe. A Persian writer could alone do justice to it, and if he succeeded he would in England be called the 'Grandfather of all liars.'" No one can read the life of Darwin without feeling great respect for his perseverance. His faithful devotion to his work can teach us all a useful lesson. Says his son: