I can talk to you because we can both set up sound-waves in the common air between us. Matter, which keeps souls apart, also brings them together. It enables each of us to have an ‘outside’ as well as an ‘inside’, so that what are acts of will and thought for you are noises and glances for me; you are enabled not only to be, but to appear: and hence I have the pleasure of making your acquaintance.
