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<div align="center"><a href=" http://www.slideshare.net/juanmasso/filosofa-descartes-13310785 "><img src=" http://www.google.cl/imgres?hl=es&sa=X&biw=1280&bih=656&tbm=isch&prmd=imvnsz&tbnid=ZBaZbcMxI9ccnM:&imgrefurl=http://micasaestaaquii.blogspot.com/2010/03/descartes-y-el-escepticismo.html&docid=ajWyTSdrHPfi5M&imgurl=https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEinyu1Vdv07QLKFvHK-Z6z-Fz4FTmBrCfLnKzWMA8x69NisoLD80t5MYz7ngkQvuMnAp7ArF7kVpDbF_rzobAc0e66JXTg9ZTDaekXM8ijONL9YJf3roJ4cXX5F0hpgqaFoWegx0do9lfA/s1600/descartes.jpg&w=425&h=425&ei=7anYT5rIEIGk8gSQ_MywAw&zoom=1&iact=hc&vpx=1014&vpy=244&dur=846&hovh=225&hovw=225&tx=166&ty=103&sig=105117005086394357501&page=2&tbnh=143&tbnw=130&start=25&ndsp=32&ved=1t:429,r:15,s:25,i:236 "></a></div>