Are all appearances deceitful? Have our senses been given us only to keep us in continual delusion? Is everything error? Do we live in a dream, surrounded by shadowy chimeras? We see the sun setting when he is already below the horizon; before he has yet risen we see him appear. A square tower seems to be round. A straight stick, thrust into the water, seems to be bent.

You see your face in a mirror and the image appears to be behind the glass: it is, however, neither behind nor before it. This glass, which to the sight and the touch is so smooth and even, is no other than an unequal congregation of projections and cavities. The finest and fairest skin is a kind of bristled network, the openings of which are incomparably larger than the threads, and enclose an infinite number of minute hairs. Under this network there are liquors incessantly passing, and from it there issue continual exhalations which cover the whole surface. What we call large is to an elephant very small, and what we call small is to insects a world.

The same motion which would be rapid to a snail would be very slow in the eye of an eagle. This rock, which is impenetrable by steel, is a sieve consisting of more pores than matter, and containing a thousand avenues of prodigious width leading to its centre, in which are lodged multitudes of animals, which may, for aught we know, think themselves the masters of the universe.

Nothing is either as it appears to be, or in the place where we believe it to be. Several philosophers, tired of being constantly deceived by bodies, have in their spleen pronounced that bodies do not exist, and that there is nothing real but our minds. As well might they have concluded that, all appearances being false, and the nature of the soul being as little known as that of the matter, there is no reality in either body or soul. Perhaps it is this despair of knowing anything which has caused some Chinese philosophers to say that nothing is the beginning and the end of all thin............