I am about half way through with this book and I love it. Aurobindo tries to synthesize the different yogas and gives a picture of a truely non-dual perspective. You are still in duality if you think that the unmanifest is all that is “real”.

To have a developed intellect is always helpful if one can enlighten it from above and turn it to a divine use.

To be free from all egoistic motive, careful of truth in speech and action, void of self-will and self-assertion, watchful in all things, is the condition for being a flawless servant.