With a metaphor destined to become very famous, in 1942, the famed neurophysiologist Charles S. Sherrington defined the brain as "the enchanted loom." As well as being a scientist, Sherrington was also a poet, and he never missed the opportunity to combine his two passions, coloring brain activity with poetry. And it is truly enchanted, that bizarre kilogram and a half of matter that lies behind our eyes, which, for some unknown reason, is capable of thinking. Not that we have not tried to understand the brain; indeed, especially in the last two decades, thanks in part to magnetic resonance – which has given us the opportunity to look inside of this biological puzzle – our knowledge on the subject has grown considerably. But the mystery remains, as we see now.