Sri Aurobindo
Letters of Sri Aurobindo
Volume III - Part 4
I may say that the opening upwards, the ascent into the Light and the subsequent descent into the ordinary consciousness and normal human life is very common as the first decisive experience in the practice of Yoga and may very well happen even without the practice of Yoga in those who are destined for the spiritual change, especially if there is a dissatisfaction somewhere with the ordinary life and a seeking for something more, greater or better. It comes often exactly in the way that she describes 
and the cessation of the experience and the descent also come in the same way. This first experience may be followed by a very long time during which there is no repetition of it or any subsequent experience. If there is a constant practice of Yoga, the interval need not be so long; but even so it is often long enough. The descent is inevitable because it is not the whole being that has risen up but only something within and all the rest of the nature is unprepared, absorbed in or attached to ordinary life and governed by movements that are not in consonance with the Light. Still the something within is something central in the being and therefore the experience is in a way definitive and decisive. For it comes as a decisive intimation of the spiritual destiny and an indication of what must be reached some time in the life. Once it has been there, something is bound to happen which will open the way, determine the right knowledge and the right attitude enabling one to proceed on the way and bring a helping influence. After that the work of clearing away the obstacles that prevent the return to the Light and the ascension of the whole being and, what is equally important, the descent of the Light into the whole being can be begun and progress towards completion. It may take long or be rapid, that depends on the inner push and also on outer circumstances but the inner aspiration and endeavour count more than the circumstances which can accommodate themselves to the inner need if that is very strong. The moment has come for her and the necessary aspiration and knowledge and the influence that can help her.