Sri Aurobindo
Letters of Sri Aurobindo
08. Transformation of the Physical
Fragment ID: 3427
This is an instance of a dream of exact physical prevision. The power to have such dreams is comparatively rare, for ordinarily such previsions come in inner vision but not in sleep. In dreams vital or mental formations often take shape which sometimes fulfil themselves in essence, but not with this accuracy of detail.
It is only a particular class of dreams that do that [indicate the exact past and the future]. Most coherent dreams are either 



symbolic or indicate things that take place in the mental or vital planes rather than on the physical.
This indicates a power of conscious thought-formation. Thoughts have an effective power – usually by creating an atmosphere or tendencies – thus when one is ill, those around should not have thoughts of gloomy foreboding, grief or fear, for that works against cure. But the capacity of conscious thought-formation is a special power and uncommon. It can be acquired or come of itself by sadhana.