This thinker's treatise Some Thoughts Concerning Education builds on his idea that the mind is a tabula rasa, or blank slate, at birth.
In a discussion of free will, this philosopher imagined a man who stays in a room voluntarily, but could not have left anyway since the door is locked. A chapter on personal identity by this thinker differentiates being a man from being a person with the thought experiment of a prince and a cobbler switching bodies. This man used the example of pounding an almond to change its texture to distinguish between the "utterly inseparable" (*) qualities of objects and qualities produced by sensations, known as primary and secondary qualities. This thinker's treatise Some Thoughts Concerning Education builds on his idea that the mind is a tabula rasa, or blank slate, at birth. For 10 points, name this English philosopher who wrote An Essay Concerning Human 
In a discussion of free will, this philosopher imagined a man who stays in a room voluntarily, but could not have left anyway since the door is locked.
John Locke