Once the command of the air is obtained by one of the contending armies, the war becomes a conflict between a seeing host and one that is blind.

We can't have any weak or silly. Life is real again, and the useless and cumbersome and mischievous have to die. They ought to die. They ought to be willing to die. It's a sort of disloyalty, after all, to live and taint the race.

Are we all bubbles blown by a baby?

When the mind grapples with a great and intricate problem, it makes its advances step by step, with but little realization of the gains it has made, until suddenly, with an effect of abrupt illumination, it realizes its victory.

In the scientific world I find just that disinterested devotion to great ends that I hope will spread at last through the entire range of human activity.

You are not mechanics, you are warriors. You have been trained, not to think, but to do.

I stood staring, not as yet realising that this was death leaping from man to man in that little distant crowd.