“it is just as wrong, or even perhaps more so, to use moral means to preserve immoral ends.”
Martin Luther King, Jr. (1929–1968) American clergyman, activist, and leader in the American Civil Rights Movement
1960s, Letter from a Birmingham Jail (1963)
Variant: I must affirm that it is just as wrong, or perhaps even more so, to use moral means to preserve immoral ends.
Context: I have consistently preached that nonviolence demands that the means we use must be as pure as the ends we seek. I have tried to make clear that it is wrong to use immoral means to attain moral ends. But now I must affirm that it is just as wrong, or perhaps even more so, to use moral means to preserve immoral ends.