When there are no avenues of escape or one is caught even before any attempt to escape can be made, then for the first time the use of self-defense techniques should be considered. Even at times like these, do not show any intention of attacking, but first let the attacker become careless. At that time attack him concentrating one's whole strength in one blow to a vital point and in the moment of surprise, escape and seek shelter and help.
Gichin FunakoshiWhen you are learning a new technique, practice it wholeheartedly until you truly understand it.
Gichin FunakoshiWhen you leave your home, think that you have numerous opponents waiting for you (it is your behavior that invites trouble from them).
Gichin Funakoshi