Sri Aurobindo
Letters of Sri Aurobindo
Volume IV - Part 3
I am not sure that it is advisable to tell these dreams to others – as a rule, the movements of the sadhana should be kept to 
oneself, because by speaking of them to others there is likely to be a dispersion of their force and perhaps a calling in of other atmospheres by the mental or vital reaction of the people to whom you tell them. It is only to very fit persons that one can safely speak about them. I don’t think these dreams could be made into a book because they need a special knowledge to understand them and this knowledge is not common. For yourself you can do it, but perhaps it would be better to wait a little before you do it.