In fact, if one reads attentively what Sri Aurobindo has written, all that he has written, one would have the answer to every question. But there are certain moments and certain ways of presenting ideas which have a dynamic effect on the consciousness and help you to make a spiritual progress. The presentation, to be effective, must necessarily be the spontaneous expression of an immediate experience. If things which have already been said are repeated in the same manner, things which belong to past experiences, it becomes a sort of teaching, what could be called didactic talk, and it sets off some cells in the brain, but in fact is not very useful.
For me, for what I am trying to do, action in silence is always much more important…. The force which is at work is not limited by words, and this gives it an infinitely greater strength, and it expresses itself in each consciousness in accordance with its own particular mode, which makes it infinitely more effective. A certain vibration is given out in silence, with a special purpose, to obtain a definite result, but according to the mental receptivity of each person it is expressed in each individual consciousness exactly in the form which can be the most effective, the most active, the most immediately useful for each individual; while if it is formulated in words, this formula has to be received by each person in its fixity—the fixity of the words given to it—and it loses much of its strength and fullness of action because, first, the words are not always understood as they are said and then they are not always adapted to the understanding of each one.
So, unless a question immediately gives rise to an experience which can be expressed as a new formula, in my opinion it is always better to keep silent. Only when the question is living can it give rise to an experience which will be the occasion of a living teaching. And for a question to be alive, it must answer an inner need for progress, a spontaneous need to progress on some plane or other—on the mental plane is the most usual way, but if by chance it answers an inner aspiration, a problem one is tackling and wants to solve, then the question becomes interesting and living and truly useful, and it can give rise to a vision, a perception on a higher plane, an experience in the consciousness which can make the formula new so that it carries a new power for realisation.
Apart from such cases I always feel that it is much better not to say anything and that a few minutes of meditation are always more useful.
Ref: Questions and Answers 1957 – 1958