Opportunities increase as they are taken.
Don't flail against the world, use it. Flexibility is the operative principle in the art of war.
If a battle can not be won do not fight it.
It is only the enlightened ruler and the wise general who will use the highest intelligence of the army for the purposes of spying, and thereby they achieve great results.
Do not press an enemy at bay.
Order or disorder depends on organisation and direction; courage or cowardice on circumstances; strength or weakness on tactical dispositions.