'And for every human being we should aim at securing, so far as they can be attained, an eye as keen and piercing as that of the eagle; an ear as sensitive to the faintest sound as that of the hare; a nostril as far-scenting as that of the wild deer; a tongue as delicate as that of the butterfly; and a touch as acute as that of the spider.

No man ever was so endowed, and no man ever will be; but all men come infinitely short of what they should achieve were they to make their senses what they might be made.

The old have outlived their opportunity, and the diseased never had it; but the young, who have still an undimmed eye, an undulled ear, and a soft hand; an unblunted nostril, and a tongue which tastes with relish the plainest fare--the young can so cultivate their senses as to make the narrow ring, which for the old and the infirm encircles things sensible, widen for them into an almost limitless horizon.' Take heed what you hear, and take heed how you hear..