“Many owe their greatness to their enemies. Flattery is fiercer than hatred, for hatred corrects the faults flattery had disguised.”

1950s, What Desires Are Politically Important? (1950)
Context: I do not wish to seem to end upon a note of cynicism. I do not deny that there are better things than selfishness, and that some people achieve these things. I maintain, however, on the one hand, that there are few occasions upon which large bodies of men, such as politics is concerned with, can rise above selfishness, while, on the other hand, there are a very great many circumstances in which populations will fall below selfishness, if selfishness is interpreted as enlightened self-interest.
And among those occasions on which people fall below self-interest are most of the occasions on which they are convinced that they are acting from idealistic motives. Much that passes as idealism is disguised hatred or disguised love of power. When you see large masses of men swayed by what appear to be noble motives, it is as well to look below the surface and ask yourself what it is that makes these motives effective. It is partly because it is so easy to be taken in by a facade of nobility that a psychological inquiry, such as I have been attempting, is worth making. I would say, in conclusion, that if what I have said is right, the main thing needed to make the world happy is intelligence. And this, after all, is an optimistic conclusion, because intelligence is a thing that can be fostered by known methods of education.

Act II, sc. ii.
The Broken Heart (c. 1625-33)

I am not one of those who left the land..." (1922), translated in Poems of Akhmatova (1973) by Stanley Kunitz and Max Hayward

Source: 1950s, Portraits from Memory and Other Essays (1956), p. 198

Preface
Endymion (1818)

Source: Quartered Safe Out Here (1992), p. 127.