Lucretius, De Rerum Natura
William Ellery Leonard, Ed.

     First, then, I say, the mind which oft we call
The intellect, wherein is seated life's
Counsel and regimen, is part no less
Of man than hand and foot and eyes are parts
Of one whole breathing creature. [But some hold]
That sense of mind is in no fixed part seated,
But is of body some one vital state,-
Named "harmony" by Greeks, because thereby
We live with sense, though intellect be not
In any part: as oft the body is said
To have good health (when health, however, 's not
One part of him who has it), so they place
The sense of mind in no fixed part of man.
Mightily, diversly, meseems they err.
Often the body palpable and seen
Sickens, while yet in some invisible part
We feel a pleasure; oft the other way,
A miserable in mind feels pleasure still
Throughout his body- quite the same as when
A foot may pain without a pain in head.
Besides, when these our limbs are given o'er
To gentle sleep and lies the burdened frame
At random void of sense, a something else
Is yet within us, which upon that time
Bestirs itself in many a wise, receiving
All motions of joy and phantom cares of heart.
Now, for to see that in man's members dwells
Also the soul, and body ne'er is wont
To feel sensation by a "harmony"
Take this in chief: the fact that life remains
Oft in our limbs, when much of body's gone;
Yet that same life, when particles of heat,
Though few, have scattered been, and through the mouth
Air has been given forth abroad, forthwith
Forever deserts the veins, and leaves the bones.
Thus mayst thou know that not all particles
Perform like parts, nor in like manner all
Are props of weal and safety: rather those-
The seeds of wind and exhalations warm-
Take care that in our members life remains.
Therefore a vital heat and wind there is
Within the very body, which at death
Deserts our frames. And so, since nature of mind
And even of soul is found to be, as 'twere,
A part of man, give over "harmony"-
Name to musicians brought from Helicon,-
Unless themselves they filched it otherwise,
To serve for what was lacking name till then.
Whate'er it be, they're welcome to it- thou,
Hearken my other maxims.