John Locke his theories about the "blank tablet" experiential John Locke The mind is a blank slate sense impressions of the world experiential experiential The mind is a blank slate The mind is a blank slate John Locke The mind is a blank slate John Locke sense impressions of the world The mind is a blank slate John Loche's John Locke John Locke John Locke John Locke John Locke John Locke sense impressions of the world