ing sciences, arts, laws, and endless inventions of man at one time
were invisible, mysterious, and hidden secrets; it is only the
all-encompassing human power which has discovered and brought them out
from the plane of the invisible to the plane of the visible. So
telegraphy, photography, phonography, and all such inventions and
wonderful arts, were at one time hidden mysteries: the human reality
discovered and brought them out from the plane of the invisible to the
plane of the visible. There was even a time when the qualities of this
iron which you see--indeed of all the metals--were hidden mysteries; men
discovered this metal, and wrought it in this industrial form. It is the
same with all the other discoveries and inventions of man, which are
innumerable.

This we cannot deny. If we say that these are effects of powers which
animals also have, and of the powers of the bodily senses, we see clearly
and evidently that the animals are, in regard to these powers, superior to
man. For example, the sight of animals is much more keen than the sight of
man; so also is their power of smell and taste. Briefly, in the powers
which animals and men have in common, the animal is often the more
powerful. For example, let us take the power of memory: if you carry a
pigeon from here to a distant country, and there set it free, it will
return, for it remembers the way. Take a dog from here to the center of
Asia, set him free, and he will come back here and never once lose the
road. So it is with the other powers such as hearing, sight, smell, taste,
and touch.

Thus it is clear that if there were not in man a power different from any
of those of the animals, the latter would be superior to man in inventions
and the comprehension of realities. Therefore it is evident that man has a
gift which the animal does not possess. Now, the animal perceives sensible
things, but does not perceive intellectual realities. For example, that
which is within the range of its vision the animal sees, but that which is
beyond the range of sight it is not possible for it to perceive, and it
cannot imagine it. So it is not possible for the animal to understand that
the earth has the form of a globe. But man from known things proves
unknown things, and discovers unknown truths. For example, man sees the
curve of the horizon, and from this he infers the roundness of the earth.
The Pole Star at Akka, for instance, is at 33x, that is to say, it is 33x
above