"The means, it is said, will be justified by the end; but it is the means which define it, and if it is contradicted at the moment that it is set up, the whole enterprise sinks into absurdity. In this way the attitude of England in regard to Spain, Greece, and Palestine is defended with the pretext that she must take up position against the Russian menace in order to save, along with her own existence, her civilization and the values of democracy; but a democracy which defends itself only by acts of oppression equivalent to those of authoritarian regimes, is precisely denying all these values; whatever the virtues of a civilization may be, it immediately belies them if it buys them by means of injustice and tyranny."
January 1, 1970
https://en.wikiquote.org/wiki/The_Ethics_of_Ambiguity