Sri Aurobindo
Letters of Sri Aurobindo
Volume I - Part 2
I don’t know that there is any [term corresponding to the subconscient in Patanjali or the Sankhya] – this plane was spoken of more as inconscient than subconscient – it is practically the indiscriminate or jadā prakṛti, perhaps – or the seed state. In the Veda it is symbolised by the cave of the Panis. Perhaps by looking through books like the Yogavasishtha one could find something about the subconscient in fact though not in express terms.