We necessarily express ourselves by means of words and we usually think in terms of space. That is to say, language requires us to establish between our ideas the same sharp and precise distinctions, the same discontinuity, as between material objects. This assimilation of thought to things is useful in practical life and necessary in most of the sciences. But it may be asked whether the insurmountable difficulties presented by philosophical problems do not arise from placing side by side in space phenomena which do not occupy space, and whether, but merely getting rid of the clumsy symbols round which we are fighting, we might not bring the fight to an end.
