Everything that I know about the world, even through science, I know from a perspective that is my own or from an experience of the world without which scientific symbols would be meaningless. The entire universe of science is constructed upon the lived world, and if we wish to think science rigorously, to appreciate precisely its sense and its scope, we must first awaken that experience of the world of which science is the second-order expression. Science neither has, nor ever will have the same ontological sense as the perceived world for the simple reason that science is a determination or an explanation of that world. ... Scientific perspectives … always imply, without mentioning it, that other perspective - the perspective of consciousness - by which a world first arranges itself around me and begins to exist for me. To return to the things themselves is to return to this world prior to knowledge, this world of which knowledge always speaks, and this world with regard to which every scientific determination is abstract, signitive, and dependent, just like geography with regard to the landscape where we first learned what a forest, a meadow, or a river is.