Can one trust his senses when perceiving the outside world? When my sensations are the basis of my perceiving my own existence, what if these sensations are to be doubted - what can the proof of my own existence be? These questions, both simple and profoundly undermining, stand at the beginning of Modernity: the philosophy of Rene Descartes. A true compilation of the text of Descartes' writings, combined with thrilling comic book illustrations that evoke Prince Valiant (and address smaller children as well), this book drags its readers - and musketeer-like Mister Descartes himself - into the adventure of thinking. It gives a lively and fascinating introduction into Cartesian thought: the conception of Cogito, doubt, and certainty of self of this Father of Modern Philosophy.