2472. This being so, people cannot speak to one another while in the body except by means of languages consisting of articulated sounds, that is, by means of separable words, and are incapable of understanding one another if they do not know those languages, the reason being that their speech is formed from the exterior memory. But spirits speak to one another by means of a universal language that is distinguished into ideas such as comprise thought itself. They are in this manner able to mix with any other spirit, whatever his language or nationality had been in the world, the reason being that their speech is formed from the interior memory. Everybody enters into the use of this latter language immediately after death because he enters into use of the interior memory, which, as stated, belongs properly to his spirit, see 1637, 1639, 1757, 1876.