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. This thinker described a central concept being affected by sensory experiences of intrinsic (-5[1])“primary qualities” (10[1])and subjective (10[1])“secondary qualities.” (10[2]-5[1])This thinker argued that (10[1])reflection or sensation informs (10[1])all “objects of thinking” to refute “innate ideas” in favor of the human mind as a blank slate, or (10[2])tabula rasa. (10[1])For 10 points, name this Enlightenment philosopher who wrote An Essay Concerning Human Understanding. (10[1])■END■ (10[2]0[1])