… once one enters the yoga and wants to do yoga, it is very necessary not to be the toy of one’s own mental formations. If one wants to rely on one’s experiences, one must take great care not to construct within oneself the notion of the experiences one wants to have, the idea one has about them, the form one expects or hopes to see. For, the mental formation, as I already have told you very often, is a real formation, a real creation, and with your idea you create forms which are to a certain extent independent of you and return to you as though from outside and give you the impression of being experiences. But these experiences which are either willed or sought after or expected are not spontaneous experiences and risk being illusions-at times, even dangerous illusions.
Therefore, when you follow a mental discipline, you must be particularly careful not to imagine or want to have certain experiences, for in this way you can create for yourself the illusion of these experiences. In the domain of yoga, this very strict and severe spontaneity is absolutely indispensable.
For that, naturally, one must not have any ambition or desire or excessive imagination or what I call “spiritual romanticism”, the taste for the miraculous-all this ought to be very carefully eliminated so as to be sure of advancing fearlessly.
The Mother
