LOCKE’S NAÏVETÉS and inconsistencies lead to a rapid further development of his empiricism, which pushes toward a paradoxical idealism and finally ends in a consummated absurdity. The foundation continues to be sensationalism and what appears to be obvious, i.e., that the sole indubitable ground of all knowledge is self-experience and its realm of immanent data. Starting from here, Berkeley reduces the bodily things which appear in natural experience to the complexes of sense-data themselves through which they appear. No inference is thinkable, according to Berkeley, through which conclusions could be drawn from these sense-data about anything but other such data. It could only be inductive inference, i.e., inference growing out of the association of ideas. Matter existing in itself, a je ne sais quoi, according to Locke, is for Berkeley a philosophical invention. It is also significant that at the same time he dissolves the manner in which rational natural science builds concepts and transforms it into a sensationalistic critique of knowledge.
Edmund Husserl, The Crisis of European Sciences and Transcendental Phenomenology