Never give in except to convictions of honor and good sense. Never yield to the apparently overwhelming might of the enemy.

Never give in - never, never, never, never, in nothing great or small, large or petty, never give in except to convictions of honour and good sense.

Never yield to force; never yield to the apparently overwhelming might of the enemy.

All the great things are simple, and many can be expressed in a single word: freedom; justice; honor; duty; mercy; hope

You have enemies? Good. That means you've stood up for something, sometime in your life.

The great defense against the air menace is to attack the enemy's aircraft as near as possible to their point of departure.