278 & 279.  As a piece of crystal, itself being pure and colourless, cannot appear red-coloured of its own accord, but in association with another red-coloured object, it appears coloured red; in the same way the Self. himself being pure cannot have emotional activities such attachment, etc., of his own accord. But when influenced by alien impurities, he gets tainted by such impure emotions of attachments, etc. It is next pointed out that one who knows the real nature of things realises that the Self, the Knower, is not the cause of the impure psychic states such as attachment, etc.