not quite so easy when we proceed to ask whether
these principles are three or one; whether, that is to say, we learn
with one part of our nature, are angry with another, and with a third
part desire the satisfaction of our natural appetites; or whether the
whole soul comes into play in each sort of action--to determine that is
the difficulty.
Yes, he said; there lies the difficulty.
Then let us now try and determine whether they are the same or
different.
How can we? he asked.
I replied as follows: The same thing clearly cannot act or be acted upon
in the same part or in relation to the same thing at the same time,
in contrary ways; and therefore whenever this contradiction occurs in
things apparently the same, we know that they are really not the same,
but different.
Good.
For example, I said, can the same thing be at rest and in motion at the
same time in the same part?
Impossible.
Still, I said, let us have a more precise statement of terms, lest we
should hereafter fall out by the way. Imagine the case of a man who is
standing and also moving his hands and his head, and suppose a person
to say that one and the same person is in motion and at rest at the same
moment--to such a mode of speech we should object, and should rather say
that one part of him is in motion while another is at rest.
Very true.
And suppose the objector to refine still further, and to draw the nice
distinction that not only parts of tops, but whole tops, when they spin
round with their pegs fixed on the spot, are at rest and in motion at
the same time (and he may say the same of anything which revolves in the
same spot), his objection would not be admitted by us, because in
such cases things are not at rest and in motion in the same parts of
themselves; we should rather say that they have both an axis and a
circumference, and that the axis stands still, for there is no deviation
from the perpendicular; and that the circumference goes round. But if,
while revolving, the axis inclines either to the right or left, forwards
or backwards, then in no point of view can they be at rest.
That is the correct mode of describing them, he replied.
Then none of these objections will confuse us, or incline us to believe
that the same thing at the same time, in the same part or in relation to
the same thing, can act or be acted upon in contrary ways.
Certainly not, according to my way of thinking.
Yet, I said, that we may not b
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