younger than another, it could not become older or younger in a
greater degree than it was at first; for equals added to unequals,
whether to periods of time or to anything else, leave the difference
between them the same as at first.
Of course. Then that which is, cannot become older or younger than
that which is, since the difference of age is always the same; the one
is and has become older and the other younger; but they are no
longer becoming so.
And the one which is does not therefore become either older or
younger than the others which are
But consider whether they may not become older and younger in
In what way?
Just as the one was proven to be older than the others and the
others than the one.
And what of that?
If the one is older than the others, has come into being a longer
time than the others.
But consider again; if we add equal time to a greater and a less
time, will the greater differ from the less time by an equal or by a
smaller portion than before?
By a smaller portion.
Then the difference between the age of the one and the age of the
others will not be afterwards so great as at first, but if an equal
time be added to both of them they will differ less and less in age?
And that which differs in age from some other less than formerly,
from being older will become younger in relation to that other than
which it was older?