All knowledge, we admit, is in the last resort "empirical," in the sense that it arises out of facts, that is, out of experiences which we cannot altogether fashion as we please to suit our own convenience, or our own sense of what is fitting or desirable, but have largely to accept as they come to us.
The Problem of Conduct: A Study in the Phenomenology of Ethics, Introductory (p. 7), Macmillan & Co Ltd. 1901