IF YOUR DON'T HAVE A SWORD WITHIN YOUR NATURE TYOU CAN'T HOLD YOUR LINE.

My Aikido teacher spoke of this, in relation to physical and non-physical confrontation.
This sword we speak of comes from the correct alignment of mind, body, and spirit, expressed from our center (Hara), and immovable self (Fudo shin)in Japanese. 
It is in confluence with clear values and principals that we hold within us.
When faced with decisions and actions we come from this centered place.
Without knowing thyself and what your principals are it can be difficult under pressure for Ego, anger or dis-aligned self not to rise up.
Strong values and principals give us a sword in our nature that we can hold to. A centred place, relaxed in our alignment. It happens to be a very non-aggressive notion because we can relax within what we know is authentic and come from a truly aligned place.
There are 5 principals of Aikido: To be used in physical and non-physical conflicts.
1. Welcome confrontation as an opportunity to learn.
2. Stand offline (don’t take it personally).
3. Blend (see where they are looking, their perspective).
4. Extend along their line, help them where they want to go.
5. Lead them into a place of safety.