"I believe this "crossing at a ford" occurs often in man's lifetime. It means setting sail even though your friends stay in harbour, knowing the rout… - Miyamoto Musashi

Many things can cause a loss of balance. One cause is danger, another is hardship, and another is surprise. You must research this. In large-scale strategy it is important to cause loss of balance. Attack without warning where the enemy is not expecting it, and while his spirit is undecided follow up your advantage and, having the lead, defeat him.

"To become the enemy" means to think yourself into the enemy's position. In the world people tend to think of a robber trapped in a house as a fortified enemy. However, if we think of "becoming the enemy", we feel that the whole world is against us and that there is no escape. He who is shut inside is a pheasant. He who enters to arrest is a hawk. You must appreciate this.

When you decide to attack, keep calm and dash in quickly, forestalling the enemy...attack with a feeling of constantly crushing the enemy, from first to last.