William Blake
"Grain of Sand" and "Sand" references.

Mock On, Mock On...

Mock on, mock on, Voltaire, Rousseau;
Mock on, mock on; 'tis all in vain!
You throw the sand against the wind,
And the wind blows it back again.

And every sand becomes a gem
Reflected in the beams divine;
Blown back they blind the mocking eye,
but still in Israel's paths they shine.

The Atoms of Democritus
And Newton's Particles of Light
Are sands upon the Red Sea shore,
Where Israel's tents do shine so bright.

Auguries of Innocence

To see a world in a grain of sand
And a heaven in a wild flower,
Hold infinity in the palm of your hand
And eternity in an hour.