The enlightened ones are forever in a state of samadhi,
even though they engage themselves in the affairs of the world.
On the other hand, one whose mind is not at peace does not enjoy samadhi
by merely sitting in the lotus posture.
Knowledge of the truth is the fire that burns up all hopes and desires
as if they are dried blades of grass. That is what is known by the word samadhi - not simply remaining silent!
That is known as the state of samadhi in which there is eternal satisfaction, clear perception of what is, egolessness, not being subject to the pairs of opposites, freedom from anxiety and from the wish to acquire or to reject.
From the very moment of the dawn of self-knowledge, the state of samadhi becomes permanent in the sage.
He neither loses it nor is it interrupted, even for a moment.
Even as time does not forget to move on, the man of self-knowledge does not forget the Self.
When at all times and in all ways the Self alone is all in all,
how can there be a state other than samadhi?
The Concise Yoga Vasistha - pg 227. ISBN 0-87395-954-X.
World's 2nd longest poem (20'000 verses), a treatsie on consciousness.