If thou observest closely through a microscope the
water which man drinks and the air which he breathes,
thou wilt see that in every breath which man breathes,
that breath contains numerous animals, and in every
draught of water great number of animals exist. This
could not be prevented because the existent beings are
eaters and eaten and, by this, existence is caused; otherwise,
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the relations between existent things would cease.
When a thing decomposes and decays, being bereft of
life, it becomes promoted to a world of life greater than
the former. For instance, it ceased in a mineral life
and was promoted to the vegetable life; then leaves the
vegetable life and is elevated to that of the animal;
then leaving the animal life it advances to the human,
and this is on account of the favor of thy Lord, the
Merciful, the Clement.