"You must learn to heed your senses. Humans use but a tiny percentage of theirs. They barely look, they rarely listen, they never smell, and they think that they can only experience feelings through their skin. But they talk, oh, do they talk. That makes up for the lack of use of their other senses."
Michael Scott, The Alchemyst
(words put in the mouth of the alchemyst Nicholas Flamel)
See my book review of this book in post below.