“This ideal theory of the true and real being that hides behind phenomena, Professor James, I repeat, puts forward only as a possible hypothesis, to point and emphasise his contention that "when we think of the law that thought is a function of the brain, we are not required to think of productive function only; we are entitled also to consider permissive or transmissive function."”
— George Holmes HowisonThe Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905)