How do we see a beauty - or an Ugliness

Light -- sun-light -- instinctively owned
source and nourisher of energies
that flesh is heir to.
Mind knowing it as twin.
Object -- not medium -- of sight.

See how mountains scatter light in certain ways --
the way that water smacks and breaks off rock,
perhaps -- and other things in different ways,
how trees have similar trade secrets of their own.
How all we know of anything is how it fractures light --
until, that is, we add the confirmation of a touch:
the mountain can be climbed,
the tree will take our weight.

But more: the way the light will change
a surface that it falls upon
(or the surface will change it),
so do the patterns from the world around
fall on to patterns sparking in the brain,
and like conflicting wave forms,
cause interference, each with each,
sometimes to enhance the status quo
and feed the pleasure centres of the mind
as beauty; sometimes to corrupt,
and tell us that we see an ugliness.