The quality or condition of being impotent; lack of strength or power, animal, intellectual, or moral; weakness; feebleness; inability; imbecility. [
1913 Webster]
"Some were poor by impotency of nature; as young fatherless children, old decrepit persons, idiots, and cripples."
[1913 Webster]
"O, impotence of mind in body strong!"
[1913 Webster]