Cogito Ergo Sum. I think, therefore I am. You may have heard this quote too many times to count, but what does it really mean? The simplicity of the phrase conceals the deeper philosophical truth that René Descartes was trying to convey in his Discourse on the Method, where the phrase first appeared in French as je pense, donc je suis. The Latin version, cogito … Continue reading What René Descartes really meant when he said Cogito Ergo Sum