Presumption

Presumption, as we use the word here, means the immoderateand unreasonable assuming that one can do what actually lies beyond one’s power to perform. Since presumption conflicts with reason, it is sinful.

Presumption is an evil opposed to magnanimity. Formagnanimity is greatness of mind and purpose for honorable achievement which, however difficult, lies within a person’s power to attain. But presumption reaches with ill-founded confidence for what lies beyond its power to grasp.