It beareth nothing of the weight away.
Yet fancy not its nature simple so.
For an impalpable aura, mixed with heat,
Deserts the dying, and heat draws off the air;
And heat there's none, unless commixed with air:
For, since the nature of all heat is rare,
Athrough it many seeds of air must move.
Thus nature of mind is triple; yet those all
Suffice not for creating sense--since mind
Accepteth not that aught of these can cause
Sense-bearing motions, and much less the thoughts
A man revolves in mind. So unto these
Must added be a somewhat, and a fourth;
That somewhat's altogether void of name;
Than which existeth naught more mobile, naught
More an impalpable, of elements
More small and smooth and round. That first transmits
Sense-bearing motions through the frame, for that
Is roused the first, composed of little shapes;
Thence heat and viewless force of wind take up
The motions, and thence air, and thence all things
Are put in motion; the blood is strook, and then
The vitals all begin to feel, and last
To bones and marrow the sensation comes--
Pleasure or torment. Nor will pain for naught