Now sing my muse, for ’tis a weighty cause.
Explain the Magnet, why it strongly draws,
And brings rough Iron to its fond embrace.
This Men admire; for they have often seen
Small Rings of Iron, six, or eight, or ten,
Compose a subtile chain, no Tye between;
But, held by this, they seem to hang in air,
One to another sticks and wantons there;
So great the Loadstone’s force, so strong to bear! ...
First, from the Magnet num’rous Parts arise.
And swiftly move; the Stone gives vast supplies;
Which, springing still in Constant Stream, displace
The neighb’ring air and make an empty Space;
So when the Steel comes there, some Parts begin
To leap on through the Void and enter in ...
The Steel will move to seek the Stone’s embrace,
Or up or down, or t’any other place
Which way soever lies the Empty Space
-
Lucretius Carus, (circa 99-55 BCE),
On the Nature of Things