I am afraid to travel much or to famous places, lest it might completely dissipate the mind. Then I am sure that what we observe at home, if we observe anything, is of more importance than what we observe abroad. The far-fetched is of the least value. What we observe in travelling are to some extent the accidents of the body, but [what] we observe when sitting at home home are, in the same proportion, phenomena of the mind itself. A wakeful night will yield as much thought as a long journey. If I try thoughts by their quality, not their quantity, I may find that a restless night will yield more than the longest journey.