In the normal play of our mind there are all sorts of perversions; hence the need to stop all these things and inculcate right thinking, right willing - in other words, Truth must be established.
Sri AurobindoThere is a veil between the Supermind above and the lower Prakriti below - the veil of ingrained formations. This veil may completely withdraw or be partially withdrawn. Thus even if there is some little opening, with the contact of Light from above the lower nature will get slowly changed.
Sri AurobindoSit in meditation ! But do not think ! Look only at your mind ! You will see thoughts coming into it ! Before they can enter, throw these away from your mind till your mind is capable of entire silence.
Sri Aurobindo