They confound difficulty with impossibility.
--South.
2. An impossible thing; that which can not be thought, done,
or endured.
Impossibilities! O, no, there's none. --Cowley.
3. Inability; helplessness. [R.] --Latimer.
{Logical impossibility}, a condition or statement involving
contradiction or absurdity; as, that a thing can be and
not be at the same time. See {Principle of Contradiction},
under {Contradiction}.