Such as I have defined and exemplified it in our Rising Mountain, Empathy is, together with mere Sensation, probably the chief factor of preference, that is of an alternative of satisfaction and dissatisfaction, in aesthetic contemplation, the muscular adjustments and the measuring, comparing and coordinating activities by which Empathy is started, being indeed occasionally difficult and distressing, but giving in themselves little more than a negative satisfaction, at the most that of difficulty overcome and suspense relieved. But although nowhere so fostered as in the contemplation of shapes, Empathy exists or tends to exist throughout our mental life. It is, indeed, one of our simpler, though far from absolutely elementary, psychological processes, entering into what is called imagination, sympathy, and also into that inference from our own inner experience which has shaped all our conceptions of an outer world, and given to the intermittent and heterogeneous sensations received from without the framework of our constant and highly unified inner experience, that is to say, of our own activities and aims. Empathy can be traced in all of modes of speech and thought, particularly in the universal attribution of _doing_ and _having_ and _tending_ where all we can really assert is successive and varied _being._ Science has indeed explained away the anthropomorphic implications of _Force_ and _Energy, Attraction_ and _Repulsion_; and philosophy has reduced _Cause_ and _Effect_ from implying intention and effort to meaning mere constant succession. But Empathy still helps us to many valuable analogies; and it is possible that without its constantly checked but constantly renewed action, human thought would be without logical cogency, as it certainly would be without poetical charm. Indeed if Empathy is so recent a discovery, this may be due to its being part and parcel of our thinking; so that we are surprised to learn its existence, as Molière's good man was to hear that be talked prose. CHAPTER X THE MOVEMENT OF LINES