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Vasistha was an ancient philosopher predating Vyasa. He is acredited as being the author of the Yoga-Vasistha, a large text that explains the concept of consciousness, the development of the world, the idea of multiple universes, our perception of the world, the dissolution of the world and emancipation from matter. All these subjects are percieved by Vasistha from the monistic (Advaita) point of view.
The Yoga-Vasistha propounds that consciousness pervades everything from the blade of grass to the universe. There is nothing else but consciousness.
Vasistha says that just as the blue sky is an optical illusion this entire world and the creation is but such an optical illusion. When the illusion ends in the mind, the world and its miseries too end. The self is the seer of all, the self is the perceiver of all and the self is the experiencer of all. And that self is only one. There is no two, there is no subject, seer and the object. It is all one.
Another oft repeated verse in the text is that of kakathaliya (coincidence). The example is given of how a crow alights on a coconut tree and that very moment the ripe coconut falls on the ground. The two events are apparently related, yet the crow never intended the coconut to fall nor the coconut only fell because the crow sat on the tree. Yet, one event led to the other in a subtle way.
This entire creation is such a coincidence and yet there is absolutely no coincidence in this creation. Everything is connected, meaning that ultimately there is no coincidence.
