Descartes said “ I realized that once in my life I had to raze everything to the ground and begin again from the original foundations, if I wanted to establish anything firm and lasting in the sciences.” Descartes described this meaning, if he wanted to know the truth about anything and have a firm foundation in his beliefs, he would have to start from the ground up and examine every detail. Doing this, would he then only be able to believe something to be true. The purpose of his examining methodology