natural science and mental phenomena, what, at least, remains to us after
science has done its worst; what the myth of Athena, as a formative and
decisive power, a spirit of creation and volition, must eternally mean
for all of us.

57. It is now (I believe I may use the strong word) "ascertained" that
heat and motion are fixed in quantity, and measurable in the portions
that we deal with. We can measure portions of power, as we can measure
portions of space; while yet, as far as we know, space may be infinite,
and force infinite. There may be heat as much greater than the sun's, as
the sun's heat is greater than a candle's: and force as much greater than
the force by which the world swings, as that is greater than the force by
which a cobweb trembles. Now, on hear and force, life is inseparably
dependent; and I believe, also, on a form of substance, which the
philosophers call "protoplasm." I wish they would use English instead of
Greek words. When I want to know why a leaf is green, they tell me it is
colored by "chlorophyll," which at first sounds very instructive; but if
they would only say plainly that a leaf is colored green by a thing which
is called "green leaf," we should see more precisely how far we had got.
However, it is a curious fact that life is connected with a cellular
structure called protoplasm, or in English, "first stuck together;"
whence, conceivably through deuteroplasms, or second stickings, and
tritoplasms, or third stickings,* we reach the highest plastic phase in
the human pottery, which differs from common chinaware, primarily, by a
measurable degree of heat, developed in breathing, which it borrows from
the rest of the universe while it lives, and which it as certainly
returns to the rest of the universe, when it dies.

58. Again, with this heat certain assimilative powers are connected,
which the tendency of recent discovery is to simplify more and more into