Secret doctrine has been the most cherished subject of all aspirants. In Sanskrit is is called 'Gupta Vidya'. A true secret is that which we forget even when we are told. It is also called 'Raja Guhyam in Sanskrit. It is a kingly secret.
The very name 'The Secret Doctrine' says, it is secret. It is secret means, it is hidden. It is hidden in us! Unless we go into our-self, we cannot realize the Secret Doctrine.
The treasure is hidden in us and as we go inside, we find that treasure.