Forget your sadness, anger, grudges and hatred. Let them pass like smoke caught in a breeze. Do not indulge yourself in such feelings.
If you do not let go of thinking about forms, you will not understand what I am showing.
Any place we can breathe, we can do Ninjutsu.
You must be on your toes constantly, yet be relaxed.
You must throw away your bad habits to get good.
When weak or injured always continue training as you should always be able to adapt in any condition.