Obstinacy is a result of the will
forcing itself into the place of the intellect.
-Arthur Schopenhauer
Obstinacy is will asserting itself
without being able to justify itself.
It is persistence without a reasonable motive.
It is the tenacity of self-love
substituted for that of reason and conscience.
-Henri Frederic Amiel
The difference between perseverance and obstinacy is,
that one often comes from a strong will,
and the other from a strong won't.
-Henry Ward Beecher
An obstinate man
does not hold opinions,
but they hold him.
-Joseph Butler