Existence is commonly present even in air and other elements, but not spatiality. Thus the two have to be distinguished. Existence has a greater pervasive capacity than space and hence it should be the substance and space the property. Minus existence, space is nothing. We should not think that spatiality has a value of its own, because it is just another name for emptiness.
Space is only an appearance like objects seen in dream, which are contradicted in waking.
The differentiated world is contradicted in the experience of Virat, Hiranyagarbha and Ishvara. As genus and the individual, Jiva and its body, qualities and objects are distinguished in ordinary life, existence and space are to be differentiated. It is due to a lack of concentration of mind and certain doubts still lurking in it that one is not able to really feel that existence is the true substance. Concentration is to be practised for a protracted period by the usual methods of Yoga, and doubts have to be removed by right observation and proper reasoning. By meditation, observation and reasoning one comes to realise that existence is not space and space is not existence.