Duality is the way we perceive life, however it is not the way that that enlightened sages see and experience the world. They see and experience Oneness
One way of looking at it is that H2O is water.
If we start at a high temperature steam is created,
On a descending scale of temperature steam become less hot and water becomes present.
Further down the scale liquid becomes ice.
It is still H2O but at each stage there has been change of quality.
Similarly one could start with LOVE as expressed by the Divine
further along the scale human unconditional love (for all)
then love for an other.
Continuing on, eventually love is not present.
Seen in this way Love and hate are not opposites, just lot of love or absence of love.
Light has presence -- darkness is just the absence of light. You can shine light but darkness has no subtance.
Electricity is either present in a wire or not. There is no such reality as off-ness.
The ego depends on duality and causality, a this causing a that. (duality)
Nothing is causing anything to happen. Everything is evolving into its own potential at every moment, God is ever present in the on going act of creation which is on going evolution.
As one is part of the Totality one effects the end result but does not cause it.
The higher/powerful the spiritual vibration the more positive the outcome
I can make a statement that will be comfortable to some, not so to some, definitely not so to others.
I am responsible for the statement but not responsible for the reaction which is personal to the reactee. The reactee is responsible for their reaction.
If it was within my power I would make everyone happy and healthy, I cant.
My responsibility as I see it is to the best I can to raise my own spiritual vibration thus contributing to the raising of consciousness of the totality.
Its not what one does but what one is that makes the difference.
Because Gandhi was a high vibration soul he achieved an amazing amount through non-violence.
Can I suggest that anyone who is really interested in Non-duality gets the book on it by Dr David Hawkins "Discovery of the presence of God/ Devotional Nonduality"
http://www.veritaspub.com/
Chris