When in doubt, observe and ask questions. When certain, observe at length and ask many more questions.

Prepare for the unknown by studying how others in the past have coped with the unforeseeable and the unpredictable.

It is the cold glitter of the attacker's eye not the point of the questing bayonet that breaks the line.

Fixed fortifications are a monument to the stupidity of man.

Accept the challenges so that you can feel the exhilaration of victory.

I don’t fear failure. I only fear the slowing up of the engine inside of me which is saying, ‘Keep going, someone must be on top, why not you?

The courageous man is the man who forces himself, in spite of his fear, to carry on.