A quiet mind does not mean that there will be no thoughts or mental movements at all, but that these will be on the surface, and you will feel your true being within, separate from them, observing but not carried away
Sri AurobindoThus to act under the guidance coming from above, this is one side of the sadhana, the dynamic side. The other one is the discrimination between the Purusha and the Prakriti. The Purusha will calmly observe, give sanction, choose, but will realise that all this does not belong to him - all these are outside him. This is the static side of the sadhana. These two aspects constitute the basis of Yoga.
Sri AurobindoI swore that I would not suffer from the world's grief and the world's stupidity and cruelty and injustice and I made my heart as hard in endurance as the nether millstone and my mind as a polished surface of steel. I no longer suffered, but enjoyment had passed away from me.
Sri AurobindoThe navel region is the centre of the vital. It is from here that the movements of the vital rise upward. Above the navel and behind the chest is the centre of the play of emotions and below this takes place the play of the physical. Mulฤdhฤra is the base of the physical. In between the Mulฤdhฤra and the navel, there is another centre of the vital.
Sri Aurobindo