“Marriage is a necessary evil”
“Most "necessary evils" are far more evil than necessary.”
“War may sometimes be a necessary evil. But no matter how necessary, it is always an evil, never a good. We will not learn to live together in peace by killing each other's children.”
“Do not let us mistake necessary evils for good.”
“Religion is a by-product of fear. For much of human history it may have been a necessary evil, but why was it more evil than necessary? Isn’t killing people in the name of god a pretty good definition of insanity?”
“The social order, though necessary, is essentially evil, whatever it may be.”