Sri Aurobindo
Letters of Sri Aurobindo
Volume II - Part 3
Fragment ID: 11914
If you suppress [the cittavṛttis], you will have no movements of the chitta at all; all will be immobile until you remove the suppression or will be so immobile that there cannot be anything else than immobility.
If you still, the chitta will be quiet; whatever movements there are will not disturb the quietude.
If you control or master, then the chitta will be immobile when you want, active when you want, and its action will be such that what you wish to get rid of will go, only what you accept as true and useful will come.