In this war it is impermissible to allow the continued existence of those who do not belong to the indolent classes.
"Down-with-the-Cities"
Nakashima, Tadashi
One can understand how an act, good in itself, can become a sin because it is performed under impermissible circumstances.
"An Outline of Sexual Morality"
Kenneth Ingram
But, if genuine, would it have seemed to a fair-minded contemporary a permissible or an impermissible letter for a philosopher to write?
"Five Stages of Greek Religion"
Gilbert Murray