If those who are sent to draw water begin by drinking themselves, the army is suffering from thirst.

If the mind is willing, the flesh could go on and on without many things.

When the common soldiers are too strong and their officers too weak, the result is insubordination. When the officers are too strong and the common soldiers too weak, the result is collapse.

I will be able to forecast which side will be victorious and which defeated.

When you do battle, even if you are winning, if you continue for a long time it will dull your forces and blunt you edge...If you keep your armies out in the field for a long time, your supplies will be insufficient. Transportation of provisions itself consumes 20 times the amount transported.

Ground which can be abandoned but is hard to re-occupy is called entangling.

If you know yourself but not the enemy, for every victory gained you will also suffer a defeat.