Conventional wisdom is no wisdom at all. Conventional wisdom is taking somebody else's word for the way things are It's the followers of this world who rely on assumption. Not the leaders.

Shoot first and ask questions not at all

There is only one kind of failure I cannot tolerate: the failure to risk failure.

Have character, but don't be a character.

The more thou sweateth in training, the less thou bleedeth in combat.

Pain was their body's way of telling them that they'd pushed themselves to their limits - which was exactly where they were supposed to be.

The rules of war and business are the same. Victory and success are the same. In one it's life and/or death in the other it is success or failure. There really is little room for compromise of "gray matter".