The Nazis entered this war under the rather childish delusion that they were going to bomb everyone else, and nobody was going to bomb them. At Rotterdam, London, Warsaw, and half a hundred other places, they put their rather naive theory into operation. They sowed the wind, and now they are going to reap the whirlwind.
Statement of 1942, at the start of the bombing campaign against Germany, as quoted in "Sir Arthur Harris & The Lancaster Bomber" at The British Postal Museum and Archive
We are going to scourge the Third Reich from end to end. We are bombing Germany city by city and ever more terribly in order to make it impossible for her to go on with the war. That is our object; we shall pursue it relentlessly.Arthur Travers Harris
In spite of all that happened at Hamburg, bombing proved a relatively humane method.Arthur Travers Harris
I do not personally regard the whole of the remaining cities of Germany as worth the bones of one British Grenadier. It therefore seems to me that there is one and only one valid argument on which a case for giving up strategic bombing could be based, namely that it has already completed its task and that nothing now remains for the Armies to do except to occupy Germany against unorganized resistance.Arthur Travers Harris