In one work, this thinker used the example of Castor and Pollux sleeping in alternating shifts to demonstrate that the soul is not always thinking. A chapter in a work by this thinker contrasts certain knowledge with arguments that are likely to be true based on “probability,” or agreement between our own and others’ experiences. (-5[1])This thinker described a central concept being affected by sensory experiences of intrinsic “primary qualities” and subjective “secondary qualities.” (10[2])This thinker argued that reflection or sensation informs all “objects (10[1])of thinking” to refute “innate ideas” (10[1])in favor of the human mind as a (10[1])blank slate, (10[1]-5[1])or tabula (10[1])rasa. (10[2])For 10 points, name this Enlightenment philosopher who wrote An Essay Concerning Human Understanding. ■END■ (10[2]0[2])