每日口說挑戰 TED-ED：笛卡兒：我存不存在? (How do you know you exist? - James Zucker)

今日挑戰句子

René Descartes tried to answer that very question, demolishing all his preconceived notions and opinions to begin again from the foundations. All his knowledge had come from his sensory perceptions of the world.

法國哲學家笛卡兒在他的著作 ”第一哲學沈思集” 試圖回答這問題，笛卡兒抛棄所有成見， 由基礎重新開始思考這個問題。笛卡兒的知識是來自於他對這個世界的認知。