Mathpo Beauty?

I snagged this quote off of the new-poetry list, submitted by Jeff Newberry

"Life is doubt, and faith without doubt is nothing but death."
Miguel de Unamuno

When I look at this quote I easily see it also as a mathematical metaphor.

Life = Doubt
Faith - Doubt = Death

What hits me so obviously is how much more beautiful the verbal language is relative to its 'seemingly cold' mathematical counterparts. However, the beauty in mathematical poetry is being able to see within an instant all the mathematically synonymous permutations and synergistically experience them as a whole integrated with the poetic beauty and power of the verbal language.

Doubt = Life
Doubt = Faith-death

Life = Faith-death

I wonder if Mr. Unamuno put much thought into the following quote:

Doubt is life, and life is faith without death