I know very well, for what concerns myself, that from having been brought up in my childhood to a plain and straightforward way of dealing, and from having had an aversion to all manner of juggling and foul play in my childish sports and recreations (and, indeed, it is to be noted, that the plays of children are not performed in play, but are to be judged in them as their most serious actions), there is no game so small wherein from my own bosom naturally, and without study or endeavour, I have not an extreme aversion from deceit.  I shuffle and cut and make as much clatter with the cards, and keep as strict account for farthings, as it were for double pistoles; when winning or losing against my wife and daughter, ’tis indifferent to me, as when I play in good earnest with others, for round sums.  At all times, and in all places, my own eyes are sufficient to look to my fingers; I am not so narrowly watched by any other, neither is there any I have more respect to.

I saw the other day, at my own house, a little fellow, a native of Nantes, born without arms, who has so well taught his feet to perform the services his hands should have done him, that truly these have half forgotten their natural office; and, indeed, the fellow calls them his hands; with them he cuts anything, charges and discharges a pistol, threads a needle, sews, writes, puts off his hat, combs his head, plays at cards and dice, and all this with as much dexterity as any other could do who had more, and more proper limbs to assist him.  The money I gave him—­for he gains his living by shewing these feats—­he took in his foot, as we do in our hand.  I have seen another who, being yet a boy, flourished a two-handed sword, and, if I may so say, handled a halberd with the mere motions of his neck and shoulders for want of hands; tossed them into the air, and caught them again, darted a dagger, and cracked a whip as well as any coachman in France.

But the effects of custom are much more manifest in the strange impressions she imprints in our minds, where she meets with less resistance.  What has she not the power to impose upon our judgments and beliefs?  Is there any so fantastic opinion (omitting the gross impostures of religions, with which we see so many great nations, and so many understanding men, so strangely besotted; for this being beyond the reach of human reason, any error is more excusable in such as are not endued, through the divine bounty, with an extraordinary illumination from above), but, of other opinions, are there any so extravagant, that she has not planted and established for laws in those parts of the world upon which she has been pleased to exercise her power?  And therefore that ancient exclamation was exceeding just: 

       “Non pudet physicum, id est speculatorem venatoremque naturae,
        ab animis consuetudine imbutis petere testimonium veritatis?”

     ["Is it not a shame for a natural philosopher, that is, for an
     observer and hunter of nature, to seek testimony of the truth from
     minds prepossessed by custom?”—­Cicero, De Natura Deor., i. 30.]