The reasonable man adapts himself to the world:
the unreasonable one persists in trying to adapt the world to himself.
Therefore all progress depends on the unreasonable man.
My reflections on the word "unreasonable" also led me back to this important article from 1960 -- "The Unreasonable Effectiveness of Mathematics in the Natural Sciences." (And I found here some analysis of the article.)
As a final comment on unreasonableness I offer "Atomic Split" -- a poem by another voice named Bernard Shaw. (Big thanks to mathematician, writer of both poetry and fiction, scholar extraordinaire -- and friend -- Robert Dawson, who alerted me to the fact that more than one writer carries this famous name.) This following poem I found here at poemhunter.com.
Atomic Split by Bernard Shaw
What a terrible thing to do,
Man has split the atom in two.
For peaceful purposes so we are told,