I had been often struck by the ease with which pianists can read and perform at sight the most difficult pieces. I saw that, by practice, it would be possible to create a certainty of perception and facility of touch, rendering it easy for the artist to attend to several things simultaneously, while his hands were busy employed with some complicated task. This faculty I wished to acquire and apply to sleight-of-hand; still, as music could not afford me the necessary elements, I had recourse to the juggler's art, in which I hoped to meet with an analogous result.
It is well known that the trick with the balls wonderfully improves the touch, but does it not improve the vision at the same time? In fact, when a juggler throws into the air four balls crossing each other in various directions, he requires an extraordinary power of sight to follow the direction his hands have given to each of the balls. At this period a corn-cutter resided at Blois, who possessed the double talent of juggling and extracting corns with a skill worthy of the lightness of his hands. Still, with both these qualities, he was not rich, and being aware of that fact, I hoped to obtain lessons from him at a price suited to my modest finances. In fact, for ten francs he agreed to initiate me in the juggling art.
I practised with so much zeal, and progressed so rapidly, that in less than a month I had nothing more to learn; at least, I knew as much as my master, with the exception of corn-cutting, the monopoly in which I left him. I was able to juggle with four balls at once. But this did not satisfy my ambition; so I placed a book before me, and, while the balls were in the air, I accustomed myself to read without any hesitation.
This will probably seem to my readers very extraordinary; but I shall surprise them still more, when I say that I have just amused myself by repeating this curious experiment. Though thirty years have elapsed since the time of which I am writing, and though I scarcely once touched the balls during that period, I can still manage to read with ease while keeping three balls up.
The practice of this trick gave my fingers a remarkable degree of delicacy and certainty, while my eye was at the same time acquiring a promptitude of perception that was quite marvellous. Presently I shall have to speak of the service this rendered me in my experiment of second sight. After having thus made my hands supple and docile, I went on straight to sleight-of-hand, and I more especially devoted myself to the manipulation of cards and palmistry.