The most powerful weapon on earth is the human soul on fire.
It take 15,000 casualties to train a major general.
Regulations are all very well for drill, but in the hour of danger they are no more use. You have to learn to think.
The unknown is the governing principle of war.
Aviation is fine as a sport. But as an instrument of war, it is worthless.
Don't drown yourself in details. Look at the whole.