'' As a rule, it is better to revisit only in imagination the places which have greatly charmed us, or which, in retrospect, seem to have done so. Seem to have charmed us, I say: for the memory we form of places where we lingered bears often but a faint resemblance to the impression received at the time; what in truth may have been very moderate enjoyment shows in the distance as a keen delight. On the other hand, if memory creates no illusion, and a certain place is associated with one of the golden moments of life, it were rash to hope that another visit would repeat the experience. For it was not merely the sights that one beheld which were the cause of joy and peace; however lovely the spot, however gracious the sky, these things external would not have availed but for contributory movements of mind and heart and blood, the essentials of the man as he then was.''