Sri Aurobindo
Letters of Sri Aurobindo
Volume 1
When the colours begin to take definite shapes it is a sign of some dynamic work of formation going on in the consciousness – a square, for instance, means that some kind of creation is in process in some field of the being; the square indicates that the creation is to be complete in itself. While the rectangle indicates something partial and preliminary. The waves of colour mean a dynamic rush of forces and the star may in such a context indicate the promise of the new being that is to be formed. The blue colour must here be the Krishna light – so it is a creation under the stress of Krishna light. All these are symbols of what is going on in the inner being, in the consciousness behind, and the results well up from time to time in the external or surface consciousness in such feeling as the awareness of a softening and opening which you had, devotion, joy, peace, Ananda, etc When the opening is complete, there is likely to be a more direct consciousness of the working that is going on behind till it is no longer behind but in the front of the nature.
The child is a very beautiful child and full of life, that is all that can be said for the moment.
I have read again the message of the yogi quoted in Madame Gold’s letter but apart from the context nothing much or very definite can be made out of it. There are two statements which are clear enough:
“In silence is wisdom” – it is in the inner silence of the mind that true knowledge can come; for the ordinary activity of the mind only creates surface ideas and representations which are not true knowledge. Speech is usually only the expression of the superficial nature – therefore to throw oneself out too much in such speech wastes the energy and prevents the inward listening which brings the word of true knowledge.
“In listening you will win what you are thinking of” means probably that in silence will come the true thought-formations 
which can effectuate or realise themselves. Thought can be a force which realises itself, but the ordinary surface thinking is not of that kind, there is in it more waste of energy than in anything else. It is in the thought that comes in a quiet or silent mind that there is power.
“Talk less and gain power” has essentially the same meaning. Not only a truer knowledge, but a greater power comes to one in the quietude and silence of a mind that, instead of bubbling on the surface, can go into its own depths and listen for what comes from a higher consciousness.
It is probably this that is meant – these are things known to all who have some experience of Yoga.