ABSTRACT
“All knowledge,” says Kant, “begins with experience”; and “all knowledge,” says Locke, “comes from experience.” Our first inquiry, then, must be, What is the simplest and most primitive form of experience? Where, if at all, is the ultimate datum to be found from which knowledge starts? Is there any fact or any state of mind which we can take as ultimate, which will help us to explain or justify other thoughts, but which needs for itself neither justification nor explanation?
