946. I have spoken to spirits about the fact that few people probably are going to believe that so many things such as these exist in the next life, the reason for that unbelief being that man has no more than a very general and hazy concept, amounting to none at all, about his life after death, a concept which people have confirmed for themselves from the fact that they do not see the soul or spirit with their eyes. This applies to the learned too. Though they refer to the existence of the soul or spirit, their belief in these is even less than that of sensory-minded people because they cling to artificial words and terms which do more to obscure and even extinguish the understanding of things, and also because they study only themselves and the world, and rarely the common good and heaven. Spirits whom I have spoken to have been amazed that man should be like this, even though he knows that nature itself and each of its kingdoms contain so many wonderful and varied things of which he is ignorant. Take just the human ear, for example. A whole book could be written about the remarkable and unheard of aspects of it, in whose existence everybody has faith. But if anything is said about the spiritual world, the source of every single thing in the realms of nature, scarcely anyone believes it, on account, as has been stated, of the preconceived and confirmed opinion that it has no existence because it is invisible.