With lovelier blending, on that stony mirror

The colours spread by man so artfully.

Know then, O friend! such Greeks the Sufis are,

Owning nor book nor master; and on earth

Having one sole and simple task,—to make

Their hearts a stainless mirror for their God.

Is thy heart clear and argent as the moon?

Then imaged there may rest, innumerous,

The forms and hues of heaven.[[192]]

So, too, says Angelus Silesius,—