René Descartes was a French seventeenth-century philosopher who is considered to be the founder of modern philosophy. Descartes was most known for being a rationalist. Being a rationalist, he believed that true knowledge is produced by thinking which is reflective, logical, and analytical, independent of our experiences in the world. He believed that reason was the only source of all knowledge and that only our abilities to reason can enable us to understand our experiences and reach accurate conclusions. His most famous work, Meditations on First Philosophy, is where he explores skepticism and came to the conclusion that the one thing that was true was that he existed and that he was a thinking thing. He figured out that because we experience