Joseph Conrad said this quote

The conquest of the earth, which mostly means the takingit away from those who have a different complexion or slightlyflatter noses than ourselves, is not a pretty thing when you lookinto it too much. What redeems it is the idea only. An idea at theback of it; not a sentimental pretence but an idea; and anunselfish belief in the idea—something you can set up, and bow downbefore, and offer a sacrifice to…