You do your worst, and we'll do our best.

Never yield to the apparently overwhelming might of the enemy.

You must be prepared for further efforts of mind and body and further sacrifices to great causes, if you are not to fall back into the rut if inertia, the confusion of aim and the craven fear of being great.

It may be that ... when the advance of destructive weapons enables everyone to kill everybody else nobody will want to kill anyone at all. [Referring to the hydrogen bomb.]

Even fools are right sometimes.

After a time, civil servants tend to become no longer servants and no longer civil.

History is written by the victors.