By perseverance, study, and eternal desire, any man can become great. 
Do everything you ask of those you command.
Good tactics can save even the worst strategy. Bad tactics will destroy even the best strategy.
Lead me, follow me, or get out of my way.
Live for something rather than die for nothing.
Never tell people how to do things. Tell them what to do and they will surprise you with their ingenuity.
Say what you mean and mean what you say.