"Well," said he, "I have been so long engaged in the practical application of the process that I confess I can't realize any element of the strange or mysterious about it. To the eye of the philosopher nothing is wonderful, or else you may say all things are equally so. The commonest and so-called simplest fact in the entire order of nature is precisely as marvellous and incomprehensible at bottom as the most uncommon and startling. You will pardon me if I say that it is only to the unscientific that it seems otherwise. But really, my dear sir, my process for the extirpation of thoughts was but the most obvious consequence of the discovery that different classes of sensations and ideas are localized in the brain, and are permanently identified with particular groups of corpuscles of the grey matter.