Those that think it permissible to tell white lies soon grow color blind.
Music is an agreeable harmony for the honor of God and the permissible delights of the soul.
To worry is a sin. Only one sort of worry is permissible; to worry because one worries.
If you were to destroy in mankind the belief in immortality, not only love but every living force maintaining the life of the world would at once be dried up. Moreover, nothing then would be immoral, everything would be permissible, even cannibalism.
There are situations in which torture is not merely permissible but morally mandatory.