Thus were the stars of heaven created like a golden chain
To bind the Body of Man to heaven from falling into the Abyss.
Each took his station and his course began with sorrow & care

In sevens & tens & fifties, hundreds, thousands, number’d all
According to their various powers, subordinate to Urizen
And to his sons in their degrees & to his beauteous daughters,
Travelling in silent majesty along their order’d ways
In right lined paths outmeasur’d by proportions of number, weight
And measure, mathematic motions wondrous along the deep,
In fiery pyramid, or Cube, or unornamented pillar square
Of fire, far shining, travelling along even to its destin’d end;
Then falling down a terrible space, recovering in winter dire
Its wasted strength, it back returns upon a nether course,
Till fir’d with ardour fresh recruited in its humble season,
It rises up on high all summer, till its wearied course
Turns into autumn. Such the period of many worlds.
Others triangular, right angled course maintain. Others obtuse
Acute, Scalene, in simple paths; others move
In intricate ways, biquadrate, Trapeziums, Rhombs, Rhomboids,
Parallelograms triple & quadruple, polygonic,
In their amazing hard subdu’d course in the vast deep.

~ William Blake