“ To know the Correspondences which exist between the things visible and ponderable in the terrestrial world and the things invisible and imponderable in the spiritual world, is to hold heaven within our comprehension. ”
 Honoré de Balzac, Séraphîta (1834). copy citation

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“‘There exist,’ says Swedenborg (‘Celestial Doctrine’ 26) , ‘innumerable Arcana within the hidden meaning of the Correspondences. Thus the men who scoff at the books of the Prophets where the Word is enshrined are as densely ignorant as those other men who know nothing of a science and yet ridicule its truths. To know the Correspondences which exist between the things visible and ponderable in the terrestrial world and the things invisible and imponderable in the spiritual world, is to hold heaven within our comprehension. All the objects of the manifold creations having emanated from God necessarily enfold a hidden meaning; according, indeed, to the grand thought of Isaiah, ‘The earth is a garment.’
“ This mysterious link between Heaven and the smallest atoms of created matter constitutes what Swedenborg calls a Celestial Arcanum, and his treatise on the ‘Celestial Arcana’ in which he explains the correspondences or significances of the Natural with, and to, the Spiritual, giving, to use the words of Jacob Boehm, the sign and seal of all things, occupies not less than sixteen volumes containing thirty thousand propositions.” source