The special thing about knowledge is that it is already contained in you, but is concealed. Knowledge from outside, thus reveals the knowledge. Eventually you come to know that there is no outside, so that everything is yourself, comes from yourself.

The precariousness with ātman is that it is self-evident as self-experience, yet it is not fully understood. Fortunately, we have the śabda pramāṇam, which is the means of knowledge called the Upaniṣads.