He that complies against his will Is of his own opinion still. - Samuel Butler

A blind man knows he cannot see, and is glad to be led, though it be by a dog; but he that is blind in his understanding, which is the worst blindness of all, believes he sees as the best, and scorns a guide.

A definition is the enclosing a wilderness of idea within a wall of words.

Having, then, once introduced an element of inconsistency into his system, he was far too consistent not to be inconsistent consistently, and he lapsed ere long into an amiable indifferentism which to outward appearance differed but little from the indifferentism …