I am convinced that much more emphasis should be placed on history. The purpose of history is to learn how human beings react when exposed to the danger of wounds or death.
Take calculated risks.
The god of war hates those who hesitate.
You must be single minded. Drive for the one thing on which you have decided.
When there is fear of failure, there will be failure.
My men can eat their belts, but my tanks have gotta have gas.