Let us never forget this: since the day of the air, the old frontiers are gone. When you think of the defense of England you no longer think of the chalk cliffs of Dover; you think of the Rhine. That is where our frontier lies. ↗
The sea is calm tonight.
The tide is full, the moon lies fair
Upon the straits;- on the French coast the light
Gleams and is gone; the cliffs of England stand,
glimmering and vast, out in the tranquil bay. ↗